<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                      ----------------------------------
                                   FORM 10-Q

           [ X ]  Quarterly Report pursuant to Section 13 or 15(d)
                  of the Securities Exchange Act of 1934
                  For the quarterly period ended June 30, 1999

           [   ]  Quarterly report pursuant to Section 13 or 15(d)
                  of the Securities Exchange Act of 1934
                  For the transition period from _________  to  ____

                        Commission File Number 0-21758
                        ------------------------------

                       DIAGNOSTIC HEALTH SERVICES, INC.
            (Exact name of registrant as specified in its charter)

       Delaware                                             22-2960048
       (State or other jurisdiction of                (I.R.S. Employer
       incorporation or organization)              Identification No.)

            2777 Stemmons Freeway, Suite 1525, Dallas, Texas 75207
         (Address of principal executive offices, including zip code)

                                 (214)634-0403
             (Registrant's telephone number, including area code)
            ------------------------------------------------------
   (Former name, former address and former fiscal year if changed since last
                                    report)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.
                              Yes    X     No
                                   -----      -----

         APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS
                          DURING THE PAST FIVE YEARS.

Indicate by check mark whether the registrant has filed all documents and
reports required to be filed by Sections 12, 13 or 15(d) of the Securities
Exchange Act of 1934 subsequent to the distribution of securities under a plan
confirmed by a court.

                             Yes ____   No ____

As of June 30, 1999, there were 11,716,395 issued and 11,483,136 shares
outstanding of Registrant's common stock,  $.001 par value.
<PAGE>

               DIAGNOSTIC HEALTH SERVICES, INC. AND SUBSIDIARIES

                         Quarterly Report on Form 10-Q

                                     Index



Part I.  Financial Information
                                                                   Page No.

Item 1.  Financial Statements

Consolidated Balance Sheets                                          2-3
June 30, 1999 and December 31, 1998

Consolidated Statements of Operations
Six months ended June 30, 1999 and 1998                                4

Consolidated Statements of Operations
Three months ended June 30, 1999 and 1998                              5

Consolidated Statement of Stockholders' Equity
June 30, 1999                                                          6

Consolidated Statements of Cash Flows
Six months ended June 30, 1999 and 1998                                7

Consolidated Statements of Cash Flows
Three months ended June 30, 1999 and 1998                              8

Notes to Consolidated Financial Statements                          9-14

Item 2.  Management's Discussion and Analysis or
Plan of Operation                                                  15-20


Part II.  Other Information                                           21

Item 6. Exhibits and Reports on Form 8-K                              21

Signatures                                                            22

Exhibit 11.1 - Statement re:  computation of per share earnings    23-24

<PAGE>

Part I.  Financial Information
Item 1.  Financial Statements


                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES
                          Consolidated Balance Sheets


                                    ASSETS
                                    ------
<TABLE>
<CAPTION>
                                          (Unaudited)    (Audited)
                                         June 30, 1999   December 31, 1998
                                         --------------  ------------------
<S>                                      <C>             <C>
CURRENT ASSETS:
 Cash and cash equivalents               $     837,290        $  1,087,349
 Accounts receivable:  Trade, net of
   allowance for doubtful accounts          10,933,145          10,088,540
 Accrued interest and other                    102,186              34,240
 Stockholder receivables                        51,321              51,321
 Employee receivables                           14,209              10,615
 Income tax refund receivable                  846,712             973,492
 Deferred federal income taxes               1,115,200           1,115,200
 Prepaid expenses and other                    363,017             352,917
                                          ------------        ------------

 Total Current Assets                       14,263,080          13,713,674
                                          ------------        ------------

PROPERTY & EQUIPMENT:
 Office furniture & equipment                2,402,049           2,381,019
 Machinery & service equipment              34,166,747          31,888,460
 Leasehold improvements                      2,094,518           2,071,914
 Less: Accumulated depreciation and
   amortization                            (14,479,178)        (12,131,560)
                                          ------------       -------------

   TOTAL PROPERTY & EQUIPMENT               24,184,136          24,209,833
                                          ------------        ------------

OTHER ASSETS:
 Deposits and other assets                     972,014             911,901
 Deferred acquisition costs                         --              98,852
 Equity in unconsolidated partnership        1,918,962           1,933,477
 Goodwill                                   19,043,582          19,043,582
 Noncompete agreements                       2,698,533           2,698,533
 Long Term Deferred Tax Asset                8,570,155           8,352,567
 Less: Accumulated amortization             (3,808,093)         (3,095,764)
                                          ------------        ------------

 Total Other Assets                         29,395,153          29,943,148
                                          ------------        ------------

TOTAL ASSETS                              $ 67,842,369        $ 67,866,655
                                          ============        ============
</TABLE>

                                                                               2
<PAGE>

                      LIABILITIES & STOCKHOLDERS' EQUITY
                      ----------------------------------
<TABLE>
<CAPTION>
                                                                    (Audited)
                                                 (Unaudited)       December 31,
                                                June 30, 1999         1998
                                               --------------     -------------
<S>                                           <C>               <C>
CURRENT LIABILITIES:
 Accounts payable                               $  3,637,386      $  3,503,268
 Accrued liabilities                               2,931,251         2,221,795
 Current lease obligations                         2,739,549         2,585,334
 Current portion of long-term debt                 7,972,448           814,106
 Senior subordinated debt                         20,000,000                --
 Advance contract proceeds                         1,955,000         1,955,000
 Notes payable                                     1,000,000                --
                                                ------------      ------------

Total Current Liabilities                         40,235,634        11,079,503

Long-term lease obligations                       11,652,743        10,652,605
Long-term debt                                        22,293         7,190,030
Senior subordinated debt                                  --        20,000,000
Deferred rent                                             --                --
Advance contract proceeds                          2,753,036         3,863,244
Deferred income taxes                                     --                --
                                                ------------      ------------

 Total Liabilities                                54,663,706        52,785,382
                                                ------------      ------------

Mandatorily Redeemable Preferred stock,
 $.001 par value; authorized 3,000,000 shares;
 issued and outstanding 773,561 and 746,500
 shares at June 30, 1999 and December 31,
 1998, respectively                                5,414,923         5,225,500

Stockholders' Equity:
 Common stock, $.001 par value, authorized
  15,000,000 shares; issued 11,249,877 and
  11,713,895 shares and outstanding 11,483,136
  and 11,480,636  shares at June 30, 1999 and
  December 31, 1998, respectively                     11,716            11,714
 Additional paid-in capital                       48,573,971        48,571,630
 Retained earnings                               (40,610,796)      (38,516,420)
 Stockholder receivable                             (103,500)         (103,500)
 Treasury stock (at cost)                           (107,651)         (107,651)
                                                ------------      ------------

Total Stockholders' Equity                         7,763,740         9,855,773
                                                ------------      ------------

TOTAL LIABILITIES &
STOCKHOLDERS' EQUITY                            $ 67,842,369      $ 67,866,655
                                                ============      ============
</TABLE>

                                                                               3
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES
               Consolidated Statements of Operations (Unaudited)

<TABLE>
<CAPTION>

                                                 Six Months Ended June 30,
                                                ---------------------------
                                                    1999          1998
                                                ------------   ------------
<S>                                             <C>           <C>
REVENUES:
 Gross revenues                                 $ 22,044,252   $ 29,568,383
                                                ------------   ------------

EXPENSES:
 General & administrative                          1,149,730      1,680,392
 Salaries & employee benefits                     12,012,331     13,024,569
 Legal & professional                                322,364        193,815
 Rent & utilities                                    784,226        755,296
 Taxes & insurance                                   476,718        593,475
 Technical operating expenses                      3,296,204      3,129,276
 Provision for doubtful accounts                     102,566        257,775
 Depreciation and amortization                     3,250,121      3,494,443
 Restructuring and impairment expense                     --      5,518,489
 Merger expense                                      717,861             --
                                                 -----------    -----------

  Total operating expenses                        22,112,121     28,647,530
                                                 -----------    -----------

 Equity in earnings of
   unconsolidated partnership                        150,000        179,843
                                                 -----------    -----------

Income from operations                                82,131      1,100,696

Other income (expense):
 Other income                                        (18,212)        92,292
 Interest expense                                 (2,059,953)    (2,175,206)
                                                 -----------    -----------
  Total other income (expense)                    (2,078,165)    (2,082,914)
                                                 -----------    -----------

INCOME BEFORE INCOME TAXES                        (1,996,034)      (982,218)

Provision for Federal Income Taxes                   (91,082)      (314,392)
                                                 -----------    -----------

Net Loss                                         $(1,904,952)   $  (667,826)

Preferred Dividends                                  189,424        176,620
                                                 -----------    -----------

Net Loss available to commons stockholders       $(2,094,376)   $  (844,446)
                                                 ===========    ===========

Loss per share:
 Basic                                           $     (0.17)   $     (0.06)
                                                 ===========    ===========
 Diluted                                         $     (0.15)   $     (0.05)
                                                 ===========    ===========

Weighted average common shares outstanding:
 Basic                                            11,482,008     11,056,601
                                                 ===========    ===========
 Diluted                                          12,290,082     12,605,891
                                                 ===========    ===========
</TABLE>


                                                                               4
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES
               Consolidated Statements of Operations (Unaudited)

<TABLE>
<CAPTION>


                                                Three Months Ended June 30,
                                                --------------------------
                                                    1999          1998
                                                ------------  ------------
<S>                                             <C>           <C>
Revenues:
 Gross revenues                                 $11,042,574   $15,153,993
                                                -----------   -----------

Expenses:
 General & administrative                           561,671       870,147
 Salaries & employee benefits                     5,921,947     6,533,712
 Legal & professional                               168,773       133,725
 Rent & utilities                                   382,952       387,388
 Taxes & insurance                                  224,185       322,403
 Technical operating expenses                     1,707,180     1,818,406
 Provision for doubtful accounts                     48,054       113,631
 Depreciation and amortization                    1,665,026     1,570,266
 Restructuring and impairment expense                    --     5,518,489
 Merger expense                                     717,861            --
                                                -----------   -----------

  Total operating expenses                       11,397,649    17,268,167
                                                -----------   -----------

 Equity in earnings of
   unconsolidated partnership                        75,000        94,168
                                                -----------   -----------

Income from operations                             (280,075)   (2,020,006)

Other income (expense):
 Other income                                       (27,441)       39,159
 Interest expense                                (1,048,552)   (1,160,868)
                                                -----------   -----------
  Total other income (expense)                   (1,075,993)   (1,121,709)
                                                -----------   -----------

INCOME BEFORE INCOME TAXES                       (1,356,068)   (3,141,715)

Provision for Federal Income Taxes                  126,506    (1,005,430)
                                                -----------   -----------

Net Loss                                        $(1,482,574)  $(2,136,285)

Preferred Dividends                                  94,712        88,310
                                                -----------   -----------

Net Loss available to commons stockholders      $(1,577,286)  $(2,224,595)
                                                ===========   ===========


Loss per share:
 Basic                                          $     (0.13)  $     (0.20)
                                                ===========   ===========
 Diluted                                        $     (0.12)  $     (0.17)
                                                ===========   ===========

Weighted average common shares outstanding:
 Basic                                           11,483,003    10,761,768
                                                ===========   ===========
 Diluted                                         12,272,178    12,366,956
                                                ===========   ===========
</TABLE>

                                                                               5
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES
          Consolidated Statement of Stockholders' Equity (Unaudited)
                    For the Six Months Ended June 30, 1999

<TABLE>
<CAPTION>
                                                                Retained
                                             Additional         Earnings
                                 Common        Paid-In        (Accumulated        Stockholder     Treasury
                                 Stock         Capital          Deficit)          Receivable        Stock            Total
-------------------------------------------------------------------------------------------------------------------------------
<S>                           <C>          <C>               <C>                <C>             <C>            <C>
Balance, December 31, 1998,     $ 11,714     $ 48,571,630     $ (33,291,667)     $ (103,500)     $ (107,651)     $ 15,080,526
as previously reported

Prior period adjustments **                                      (5,224,753)                                       (5,224,753)
                                -----------------------------------------------------------------------------------------------
Balance, December 31, 1998,     $ 11,714     $ 48,571,630     $ (38,516,420)     $ (103,500)     $ (107,651)     $  9,855,773
Adjusted

Net Loss                                                         (2,094,376)                                       (2,094,376)

Stock options exercised                2            2,341                                                               2,343
                                -----------------------------------------------------------------------------------------------
Balance, June 30, 1999          $ 11,716     $ 48,573,971     $ (40,610,796)     $ (103,500)     $ (107,651)      $ 7,763,740
===============================================================================================================================
</TABLE>

**NOTE:  To adjust the mandatorily redeemable preferred stock to its liquidation
         preference of $7.00 per share.

                                                                               6
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES
               Consolidated Statements of Cash Flows (Unaudited)

<TABLE>
<CAPTION>
                                           Six Months Ended June 30,
                                          --------------------------
                                              1999          1998
                                          ------------  ------------
<S>                                     <C>            <C>
Cash Flows from Operations:
 Net loss                                 $(1,904,952)  $  (667,826)
Adjustments to Reconcile Net Loss to
 Net Cash Provided by Operations:
 Depreciation and amortization              3,250,131     3,494,443
 Deferred federal income taxes               (217,588)      (50,716)
 Decrease in deferred rent expense                 --        (3,373)
 Loss on disposal of assets                    27,358            --
 Restructuring and impairment expense              --     4,593,808
 (Increase) decrease in other receivable       96,569            --
 (Increase) decrease in trade receivable     (947,172)    1,601,800
 Increase in contract receivables                  --    (5,172,155)
 Provision for bad debt                       102,566            --
 (Increase) decrease in prepaid expenses      (10,100)     (237,110)
 Increase in equity in unconsolidated
  partnership                                  14,515       (55,493)
 Increase (decrease) in accounts payable      134,118      (829,040)
 Increase (decrease) in accrued liabilities   544,942      (427,993)
 Increase in income taxes payable             126,780    (1,664,699)
                                          -----------   -----------
Net Cash Provided by Operations             1,217,167       581,646
                                          -----------   -----------

Cash Flows Used in Investing Activities:
 (Increase) decrease in other assets          (60,113)     (128,336)
 Cash payments for the purchase of
  property                                   (261,176)     (990,254)
 Acquisition of businesses net of cash
  acquired                                         --       (11,352)
 (Increase) decrease in subsidiary
  acquisition costs                            98,852      (175,166)
 (Increase) decrease in other
  receivables                                      --       (30,901)
 (Increase) decrease in employee
  receivables                                  (3,594)       58,482
 Increase in stockholder receivable                --        (2,565)
                                          -----------   -----------
 Net Cash  (USED IN) PROVIDED BY
  Investing Activities                       (226,031)   (1,280,092)
                                          -----------   -----------

Cash Flows from Financing Activities:
 Proceeds from issuance of common stock         2,343     2,527,732
 Net borrowings on line of credit           1,000,000       137,446
 Increase (decrease) in other
  liabilities                              (1,110,209)    1,722,124
 Principal payments on long-term debt          (9,395)   (1,047,512)
 Principal payments on capital lease
  obligations                              (1,123,934)   (2,035,486)
                                          -----------   -----------
Net Cash  (Used IN) provided by
 Financing Activities                      (1,241,195)    1,304,304
                                          -----------   -----------

Net increase (decrease) in cash              (250,059)      605,858
Cash and cash equivalents balance,
 beginning of period                        1,087,349     5,126,114
                                          -----------   -----------
Cash and cash equivalents balance,
 end of period                            $   837,290   $ 5,731,972
                                          ===========   ===========
</TABLE>

                                                                               7
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES
               Consolidated Statements of Cash Flows (Unaudited)

<TABLE>
<CAPTION>

                                         Three Months Ended June 30,
                                         ---------------------------
                                              1999          1998
                                         ------------   ------------
<S>                                     <C>           <C>
Cash Flows from Operations:
 Net loss                                $ (1,482,574)  $ (2,136,285)
Adjustments to Reconcile Net Loss to
 Net Cash Provided by Operations:
 Depreciation and amortization              1,665,026      1,570,266
 Deferred federal income taxes                     --        (50,716)
 Decrease in deferred rent expense                 --         (1,687)
 Gain on disposal of assets                    27,358            186
 Restructuring and impairment expense              --      4,593,808
 (Increase) decrease in other receivable      (59,284)            --
 (Increase) decrease in trade receivable     (624,548)       346,922
 Increase in contract receivables                  --     (4,186,671)
 Provision for bad debt                        48,054             --
 (Increase) decrease in prepaid expenses       56,358       (329,869)
 Increase in equity in unconsolidated
  partnership                                  89,515         30,182
 Increase (decrease) in accounts payable       93,177        405,263
 Increase (decrease) in accrued liabilities   641,585      1,397,602
 Increase in income taxes payable             126,780     (1,955,738)
                                          -----------    -----------
Net Cash Provided by Operations               581,447       (316,737)
                                          -----------    -----------

Cash Flows Used in Investing Activities:
 (Increase) decrease in other assets           14,313        315,671
 Cash payments for the purchase of
  property                                   (120,649)      (473,346)
 Acquisition of businesses net of cash
  acquired                                         --         (6,880)
 (Increase) decrease in subsidiary
  acquisition costs                           250,732        (83,425)
 (Increase) decrease in other
  receivables                                      --        (68,116)
 (Increase) decrease in employee
  receivables                                  (1,877)        (6,476)
 Increase in stockholder receivable                --           (472)
                                          -----------    -----------
Net Cash  (USED IN) PROVIDED BY
 Investing Activities                         142,519       (323,044)
                                          -----------    -----------

Cash Flows from Financing Activities:
 Proceeds from issuance of common stock         1,406        338,001
 Increase (decrease) in other
  liabilities                                (331,679)     1,626,901
 Principal payments on long-term debt          (4,740)      (423,285)
 Principal payments on capital lease
  obligations                                (470,591)      (833,878)
                                          -----------    -----------
Net Cash  (Used IN) provided by
 Financing
 Activities                                  (805,604)       707,739
                                          -----------    -----------

Net increase (decrease) in cash               (81,638)        67,958
Cash and cash equivalents balance,
 beginning of period                          918,928      5,664,014
                                          -----------    -----------
Cash and cash equivalents balance,
 end of period                            $   837,290    $ 5,731,972
                                          ===========    ===========

</TABLE>

                                                                               8
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES


NOTE 1. GENERAL

The unaudited consolidated financial statements included herein for Diagnostic
Health Services, Inc. and subsidiaries ("DHS" or the "Company") have been
prepared pursuant to the rules and regulations of the Securities and Exchange
Commission and include all adjustments which are, in the opinion of management,
necessary for a fair presentation. Certain information and footnote disclosures
required by generally accepted accounting principles have been condensed or
omitted pursuant to such rules and regulations. Certain 1998 balances have been
reclassified to conform to the 1999 presentation.  These financial statements
include the accounts of the Company and its subsidiaries, which are set forth in
the following table.

                      [ORGANIZATIONAL CHART APPEARS HERE]


In addition, DHS and DHSMS have two inactive wholly owned subsidiaries, MAI
Acquisition Corp., Diagnostic Health Services de Mexico, S.A. de C.V. and
HomeCare International, Inc.

The Company is a leading outsource provider of medical services to hospitals,
physicians' offices and other healthcare facilities in the Midwest, West and
South Central United States.  DHS primarily provides radiology and cardiology
diagnostic services and equipment, as well as departmental management services,
to healthcare facilities on an in-house and shared basis.

                                                                               9
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

NOTE 2. WARRANTS

On February 14, 1997, the SEC declared effective the Company's Form S-3
Registration Statement relating to an offering of 1,791,150 Warrant Shares,
which are issuable upon exercise, at prices ranging from $5.48 to $7.50 per
share, of (i) 1,375,000 Redeemable Common Stock Purchase Warrants (the "Public
Warrants") issued in connection with the company's 1993 initial public offering
(the "IPO"), (ii) 316,150 underwriter warrants issued in connection with the IPO
(the "Underwriters' Warrants"), and (iii) 100,000 warrants issued in connection
with DHS's equity private placement in April 1996 (the "Bridge Warrants") of
which 2,500 had been exercised prior to the effectiveness of the registration.
On February 18, 1997, the Company called all of the Public Warrants for
redemption.

On April 17, 1997, the Company issued 60,000 common stock purchase warrants to
The Prudential Insurance Company of America ("Prudential") in connection with
the sale of $20,000,000 in principal amount of senior subordinated promissory
notes. As of June 30, 1999, none of such warrants had been exercised.

At June 30, 1999, stock warrants outstanding amounted to 70,000 at exercise
prices ranging from $6.25 to $12.25 per common share.


NOTE 3. ACQUISITIONS

In January 1997, the Company, through its Heart Institute of Tulsa, Inc.
subsidiary ("HIT"), acquired Ultrasound Diagnostic Services, Ltd. ("UDS"), an
Arizona-based provider of non-invasive diagnostic ultrasound testing services.
The consideration paid for UDS consisted of 86,520 shares of DHS's common stock
and a $400,000 cash payment to the former stockholders of UDS.

On March 21, 1997 (effective as of March 1, 1997), the Company, through its
second-tier wholly-owned subsidiary, SoCal Diagnostic Services, Inc. ("SoCal"),
purchased substantially all of the operating assets (exclusive of cash) of the
ultrasound division of Diagnostic Imaging Services, Inc. ("DIS"), which business
consists primarily of providing hospital-based and mobile non-invasive
ultrasound and other diagnostic testing services to the acute and post-acute
care industry and primary care physicians in the greater Los Angeles and San
Diego, California metropolitan areas and in counties adjacent thereto.  The
purchase included $6,519,475 of various assets (including goodwill), including
approximately $2,579,158 of equipment, furniture and fixtures, $8,590 of
security deposits, and $3,931,721 of goodwill.  The purchase price paid to DIS
was $6,519,475 (subject to post-closing adjustment), which was paid entirely in
cash.  In addition, SoCal assumed capital lease obligations, financing
agreements and other commitments in respect of fixed assets in the aggregate
principal amount of $1,519,261.  The Company also agreed that it would,
subsequent to the closing, in the event of certain business developments, issue
certain common stock purchase warrants to DIS, and the Company and SoCal
obtained a 10-year non-competition agreement from DIS in consideration of the
cash sum of $1,000,000 paid to DIS and its ultimate corporate parent at the time
of closing.

On April 17,1997 (effective March 1, 1997), SoCal acquired all of the issued and
outstanding capital stock of DIS (which, together with its wholly-owned
subsidiaries, Diagnostic Imaging Services, Inc. I and Santa Monica Imaging
Center Limited Partnership, are collectively referred to herein as the "DIS
Companies"), whose business consists primarily of the ownership and operation of
four (4) hospital-based magnetic resonance imaging (MRI) centers located in
southern California.  The purchase price for the stock of DIS was $9,083,865
(subject to post-closing adjustment), of which $7,583,865 was paid in cash, and
the remaining $1,500,000 of which was payable either in cash or (at the seller's
option) in common stock of the Company (valued at $7.615 per share) in three
equal annual installments of $500,000 each on April 17 of each of 1998, 1999 and
2000.  In addition, the DIS Companies were acquired subject to capital lease
obligations, financing agreements and other commitments in respect of fixed
assets of the business in the aggregate principal amount of $6,046,755.

                                                                              10
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

NOTE 3 - ACQUISITIONS (Continued)

The funds utilized to pay the cash portion of the purchase price in the second
DIS transaction were obtained through the simultaneous issuance and sale by the
Company to Prudential of $20,000,000 in principal amount of senior subordinated
promissory notes of the Company (the "Subordinated Notes"). The Subordinated
Notes bear interest at a fixed rate of 10.5% per annum (payable quarterly), and
mature as to principal in equal one-third installments on April 17 of each of
2003, 2004 and 2005. The Subordinated Notes may be prepaid at the Company's
option (subject to certain "make-whole" prepayment premiums in respect of the
remaining stated term of the Subordinated Notes), and the Company may be
required (at the Noteholders' option) to purchase the Subordinated Notes in the
event of a change in control of the Company. In addition to application to the
payment of the cash portion of the purchase price for the stock of DIS, the net
proceeds from the issuance and sale of the Subordinated Notes were utilized to
repay $5,500,000 in borrowings obtained under the Company's senior credit
facilities with Texas Commerce Bank National Association (the "Bank") (utilized
in connection with the Company's March 1997 acquisition of the ultrasound
business of DIS), and for short-term investments pending other use of such net
proceeds.

In connection with the issuance of the Subordinated Notes, the Company paid
Prudential a fee in the amount of $54,590, and issued to Prudential a five-year
redeemable common stock purchase warrant (with piggyback registration rights)
for 60,000 shares of common stock of the Company at an exercise price of $12.25
per share. In addition, the Company paid to Prudential Securities, Inc. (as
placement agent) a fee in the amount of $690,470.

Effective as of October 17, 1997, HIT acquired CardioVision Inc., ("CVI"), a Las
Vegas, Nevada-based provider of non-invasive diagnostic ultrasound testing
services.  The consideration paid for CVI consisted of 29,728 shares of DHS
common stock and a $340,000 cash payment to the former stockholders of CVI.

On November 19, 1997, SoCal acquired the assets and business of Valley
Diagnostic Services ("Valley"), a proprietorship providing mobile diagnostic
ultrasound testing services in southern California.  The consideration paid by
SoCal in this transaction consisted of 13,309 shares of DHS common stock and a
$100,000 cash payment to the former owner of Valley.

Effective as of December 2, 1997, HIT acquired Medical Diagnostics Imaging, Inc.
("MDII"), a Huntsville, Alabama-based provider of non-invasive diagnostic
ultrasound testing services.  The consideration for MDII consisted of 100,524
shares of DHS common stock and a $900,000 cash payment to the former stockholder
of MDII.

Effective as of December 9, 1997, SoCal acquired Mobil Diagnostics, Inc.
("Mobil"), a southern California-based provider of mobile non-invasive
diagnostic testing services.  The consideration for Mobil consisted of 39,720
shares of DHS common stock and a cash payment of $150,000 to the former
stockholder of Mobil.  In addition, SoCal agreed to cause DHS to issue certain
additional shares of DHS common stock to the former stockholder within 15 days
after the first anniversary of the closing date, and to make cash payments to
the former stockholder of $50,000 and $28,000, respectively, within 15 days
after the first and second anniversaries of the closing date.

Effective as of December 30, 1997, the Company's second-tier wholly-owned
subsidiary Mobile Diagnostic Systems, Inc. ("MDS") acquired Medical Ancillary
Services, Inc. ("MASI"), a Fort Worth-based provider of non-invasive diagnostic
ultrasound and nuclear imaging testing services.  The consideration paid for
MASI consisted of 53,582 shares of DHS common stock and a cash payment of
$384,000 to the former stockholders of MASI.

Effective as of January 30, 1998, MDS acquired International Cardiac Monitoring,
Inc. ("ICM"), a Houston-based provider of medical testing and monitoring
services.  The consideration paid for ICM consisted of 26,946 shares of DHS
common stock.

                                                                              11
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

On February 26, 1998, SoCal acquired from DIS-Delaware one-half of the
outstanding general partnership interests and one-half of the outstanding
limited partnership interests in Scripps Chula Vista Imaging Center, L.P.
("SCVIC"), whose business consists of the operation of a magnetic resonance
imaging center on the campus of Scripps Hospital in Chula Vista, California.
The consideration paid for such partnership interests consisted of 127,250
shares of DHS common stock, which, together with certain additional shares
issued in satisfaction of the post-closing payment obligations under the April
17, 1997 transaction related to DIS, were subsequently registered pursuant to a
registration statement on Form S-3.

Effective as of March 2, 1998, the Company acquired Sonomed, Inc. ("Sonomed"), a
Birmingham, Alabama-based provider of medical testing and monitoring services.
The consideration paid for Sonomed consisted of 14,571 shares of DHS common
stock and a cash payment of $30,000 to the former stockholders of Sonomed.

In March 1998, DIS-Delaware agreed to convert into DHS common stock the
$1,500,000 of deferred purchase price payments described above and all rights to
receive DHS warrants as described above; as a result, $1,500,000 of deferred
liabilities were recorded by DHS as current liabilities at March 31, 1998. On
April 8, 1998, the deferred liabilities and warrant rights were converted into
200,000 DHS common shares, which were subsequently included in DHS' S-3
Registration Statement declared effective by the Securities and Exchange
Commission (the "SEC") on April 24, 1998.

On May 11, 1998, the Company's Heart Institute of Tulsa, Inc. subsidiary ("HIT")
acquired Diagnostic Radiology Mobile Ultrasound, Inc. ("DRMU"), an Edmond,
Oklahoma-based provider of non-invasive ultrasound testing services. The
consideration paid to the former owners of DRMU consisted of 13,484 shares of
DHS common stock.

On May 22, 1998, MDS purchased the assets of the ultrasound business segment of
Advanced Respiratory Care Services, Inc. ("ARCS"), which provides non-invasive
diagnostic ultrasound testing services in Abilene, Texas and Nashville,
Tennessee.  The consideration paid to ARCS consisted of a cash payment of
$13,556.

NOTE 4. SUPPLEMENTAL CASH FLOW INFORMATION

Cash paid for the six months ended June 30, 1999 and 1998 for interest was
approximately $1,535,000 and $1,748,0000, respectively.

No cash payments for income taxes were made for the six months ended June 30,
1999, while the Company paid approximately $400,000 in cash for the six months
ended June 30, 1998.

                                                                              12
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

The Company also recognized assets and obligations under noncompete agreements
of approximately $22,000 for the six months ended June 30, 1998.

The Company acquired property and equipment under capital leases, excluding
leases in connection with business acquisitions, of approximately $2,278,000 and
$212,000 for the six months ended June 30, 1999 and 1998, respectively.

During the six months ended June 30, 1998, the Company made an adjustment of
approximately $1,753,000 to goodwill, related to the SoCal and ICM
acquisitions, due to the revaluation of the property and equipment acquired.

During the six months ended June 30, 1998, the Company converted $1,500,000 of
deferred liabilities related to the DIS acquisition by the issuance of 200,000
DHS shares.

Dividends paid in kind on the Company's mandatorily redeemable preferred stock
were $189,424 and $176,620 for the six months ended June 30, 1999 and 1998
respectively.

NOTE 5 - MANDATORILY REDEEMABLE PREFERRED STOCK

The mandatorily redeemble preferred stockholders are entitled to receive
preferential and cumulative annual preferred stock dividends, payable in kind
in additonal preferred shares, at a rate of 7.25% of the liquidation preference
of $7.00 per share and are entitled to a preference, in liquidation, in the
amount of $7.00 per share plus accrued and unpaid dividends. As of June 30,
1999, there were no cumulative preferred stock dividends in arrears. Preferred
shares are not entitled to vote except in certain circumstances. The holders of
outstanding preferred shares may convert such shares at the rate of one share
for each share of common stock. Additionally, in any fiscal quarter in which the
mean average daily last reported sale price of the common stock is less than
$7.00 per share, then, at any time during the next succeeding fiscal quarter of
the Company, the holders of the preferred stock shall have the right to convert
any or all of their shares into common stock, with each outstanding share being
convertible into a number of shares of common stock equal to the liquidation
value divided by the average closing price during the preceding fiscal quarter.
Each conversion has a limitation whereby the conversion shares held by the
subject holder cannot exceed 9.9% of the outstanding common shares outstanding
prior to conversion.

The holders of the preferred stock may require the Company to redeem any or all
of the outstanding preferred stock at a price of $7.00 per share at any time and
from time to time on or after November 13, 2001, subject to certain limitations
under the Company's loan agreements. Additionally, the Company may at its sole
discretion redeem all or any portion of the preferred stock then outstanding. On
any such redemption, the Company will pay a price per share on a progressive
scale specifically designated by the certificate of stock designation agreement.
At June 30,1999, the Company would pay a price of no less than $8.10 per
preferred share for any such redemption.

The liquidation preference amounts and shares outstanding, including all
dividends, are as follows:

                           Liquidation Preference
                           ----------------------
As of December 31,    No. of Shares            Amount
------------------    -------------          ----------

      1998                746,500            $5,225,500
      1997                695,593             4,872,263
      1996                648,986             4,542,903

NOTE 6 - CHANGE IN ACCOUNTING METHOD

In December 1998, the Company elected to change its method for accounting for
future payments relating to contract receivables due on long-term equipment and
service agreements.  Under the previous method, expected

                                                                              13
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

profits or losses on contracts were based on the Company's estimates of total
revenue values and related costs upon installation. These estimates were
reviewed and revised periodically throughout the lives of the contracts, and
adjustments resulting from such revisions were recorded in the periods in which
the revisions are made. Losses on contracts were recorded in full as they were
identified.

Under the new method, contract revenues are recognized on a monthly basis as
billed to customers, and all costs are treated as period costs.  The Company
believes that the new method is preferable because results of operations will
more closely approximate actual cash flows.

NOTE 7 - SUBSEQUENT EVENTS

On May 18, 1999, the Board of Directors of the Company and Medical Alliance,
Inc. ("MAII") unanimously approved and entered into an amended and restated
agreement pursuant to which the Company would merge with and into a wholly-owned
subsidiary of MAII. Under the terms of the amended and restated agreement,
holders of the Company's common stock would have received a fixed ratio of .375
shares of the MAII common stock for each share of the Company's common stock.
The transaction was expected to close by the end of the third quarter of 1999.
However, on August 10, 1999, the companies announced that the proposed
transaction would not be consummated. On August 11, 1999, the Company's stock
was delisted by the Nasdaq National Market and now trades on the OTC Bulletin
Board. The proposed merger was central to the Company's plans improve the
capital structure of the Company and retain its Nasdaq listing.

NOTE 8 - GOING CONCERN

The Company's current cash flows are not sufficient to fund its operations and
meet its current debt service requirements. The Company is attempting to
refinance its senior debt with a new lender under terms that would better enable
the Company to meet its refinanced debt service obligations. The Company also
expects that a restructuring of its subordinated debt will be required, as well
as raising additional equity. If these efforts fail, the Company would most
likely be forced to attempt to reorganize its affairs through a bankruptcy.

The Company is in default in payment of the $400,000 principal payment that was
due Chase Bank of Texas, N.A. ("Chase") on July 17, 1999. Additionally, the
Company's $1 million revolving credit facility with Chase matured on June 30,
1999, and has not been repaid or renewed by Chase. The Company has received a
notice of event of default from Chase; accordingly, all of the Chase debt has
been reclassified to current liabilities.

The Company is in default in payment of two quarterly interest payments (each in
the amount of $525,000) that were due under the Subordinated Notes on April 17,
1999 and July 17, 1999, respectively. The Company is also in default with
respect to financial covenants of its subordinated note agreement with
Prudential. Such defaults to Prudential also constitute events of default under
the Company's loan agreement with Chase. Accordingly, the entire Prudential debt
has been reclassified to current liabilities.

The Company is not in compliance with most of the financial covenants in the
Chase and Prudential loan agreements.

Except for reclassification of the entire Chase and Prudential debt as current,
these financial statements do not contain any adjustments that might be
necessary should the Company be unable to continue as a going concern.  Should
the Company be unable to continue as a going concern, additional adjustments
will be required, including charging off remaining intangibles (which are
realized through continuing operations of acquired businesses) and deferred tax
assets (which are realized through future taxable income).

                                                                              14
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

Item 2.  Management's Discussion and Analysis or Plan of Operations

Results of Operations


In 1998, the Company's performance declined due to deterioration in the
ultrasound business it acquired from Advanced Clinical Technology, Inc. and
Horizon/MDS Corporation (collectively, "ACT"), and to a lesser extent, the
mobile ultrasound business acquired from Diagnostic Imaging Services, Inc.
("DIS").  The Company spent most of 1998 restructuring the acquired businesses,
re-pricing or resigning from unprofitable accounts, and adjusting its cost
structure to service the remaining business.  As a result of the deterioration
in the ACT and DIS ultrasound businesses, the Company went through a period in
which liquid resources were depleted and the Company's balance sheet became
increasingly leveraged.  During 1998, the Company wrote off $18.2 million in
goodwill, $1.9 million in fixed assets, and $2.4 million of acquired accounts
receivable primarily related to these acquisitions, as well as smaller
additional write-offs related to other acquisitions as described below.

The Company has a high fixed-cost structure, and as revenues from the acquired
businesses declined, operating margins also declined.  Additionally, the margins
related to portions of the replacement revenues were too low. Many of the
Company's restructuring efforts during 1998 were directed towards reducing fixed
costs, eliminating marginal and unprofitable accounts, and establishing and
improving returns on new and existing business. Management began this process
during the second quarter of 1998 and continues to seek opportunities to reduce
costs and improve cash flows.

In December 1998, the Company elected to change its method for accounting for
future payments relating to contract receivables due from long-term equipment
and service agreements.  Under the previous method, expected profits or losses
on contracts were based on the contracts' guaranteed minimum values and total
estimated related contract costs upon installation.  These estimates were
reviewed and revised periodically throughout the lives of the contracts, and
adjustments resulting from such revisions were recorded in the periods in which
the revisions were made.  Losses on contracts were recorded in full as they were
identified.  Accordingly, the Company's ability to accurately predict its
earnings was based in part on the timing, size, and estimated costs to be
incurred on new long-term contracts in any given period.  As the Company's long-
term contracts increased in recent periods, both in length and dollar amount,
the impact of long-term contract revenue recognition became greater.  Also,
because of uncertainties inherent in the estimation process as it relates to
long-term contracts, it was reasonably possible that actual earnings would
differ from the estimates.  The Company changed its accounting method effective
October 1, 1998, in order to recognize revenue and expense on long-term
contracts ratably over the lives of the contracts. Although this change will
result in lower revenues and earnings (due to the deferral aspect of the new
method), the change will have no impact on cash flows.  Management believes that
this change will make the Company's revenues, expenses and earnings more
predictable.

                                                                              15
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

The following table sets forth pro forma operating results of the Company,
presented as if the change in accounting method had been in place throughout
the year ended 1998 and to exclude nonrecurring charges. The discussion that
follows is based on a comparison of 1999 results of operations as compared to
pro forma presentation of the operating results for 1998.

<TABLE>
<CAPTION>
                                              Second Quarter                  Second Quarter                   Variance
                                       ------------------------------------------------------------------------------------------
                                                1999                                             1998             2Q 99 vs 2Q 98
                                       ------------------------------------------------------------------------------------------
<S>                                       <C>                      <C>            <C>                 <C>              <C>

Gross revenues                         $   11,042,574  100.00%        $   11,157,749     100.00%       $    (115,175)     -1.03%
                                       ----------------------         -------------------------        ------------------------
Expenses:
    General & administrative                  561,671    5.09%               870,147       7.80%            (308,476)    -35.45%
    Salaries & employee benefits            5,921,947   53.63%             6,533,712      58.56%            (611,765)     -9.36%
    Legal & professional                      168,773    1.53%               133,725       1.20%              35,048      26.21%
    Rent & utilities                          382,952    3.47%               387,388       3.47%              (4,436)     -1.15%
    Taxes & insurance                         224,185    2.03%               322,403       2.89%             (98,218)    -30.46%
    Technical operating expenses            1,707,180   15.46%             1,818,406      16.30%            (111,226)     -6.12%
    Provision (credit) for                     48,054    0.44%               113,631       1.02%             (65,577)    -57.71%
    doubtful accounts
    Depreciation and amortization           1,665,026   15.08%             1,570,266      14.07%              94,760       6.03%
                                       ----------------------         -------------------------        ------------------------
    Total operating expenses               10,679,788   96.71%            11,749,678     105.31%          (1,069,890)     -9.11%
                                       ----------------------         -------------------------        ------------------------
Equity in earnings of                          75,000    0.68%                94,168       0.84%             (19,168)    -20.36%
 unconsolidated partnership
                                       ----------------------         -------------------------        ------------------------
Income (loss) from continuing
 operations before income taxes        $      437,786    3.96%        $     (497,761)     -4.46%       $     935,547     187.95%
                                       ======================         =========================        ========================

Earnings before Interest, Taxes,
    Depreciation, and amortization     $    2,102,812   19.04%        $    1,072,505       9.61%       $   1,030,307      96.07%
                                       ======================         =========================        ========================

Income (loss) from continuing
 operations
    before incomes taxes per share:
    Basic                              $         0.04                 $       (0.04)
                                       ==============                 =============
    Diluted                            $         0.04                 $       (0.04)
                                       ==============                 =============

Weighted average common shares
 outstanding:
    Basic                                  11,483,003                    10,761,768
    Diluted                                12,272,178                    12,366,956

</TABLE>


NOTE:  Numbers may not add due to rounding.

                                                                              16
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES


Three Months Ended June 30, 1999 Compared with Three Months Ended June 30, 1998

During the three months ended June 30, 1999, gross revenues remained essentially
unchanged from the comparable prior year period.  Operating expenses decreased
by approximately 9.1% from $11,750,000 to $10,680,000. The principal areas that
decreased in 1999 were general and administrative expense, which decreased by
approximately 35.4% from $870,000 to $562,000, and salaries and employee
benefits, which decreased by approximately 9.4% from $6,534,000 to $5,921,000.
Salaries and benefits, and general and administrative expenses, decreased as a
result of cost-cutting and restructuring efforts undertaken during the prior 12
months. Technical operating expenses decreased by 6.1% from $1,818,000 to
$1,707,000. Operating income increased $936,000 to $438,000 in 1999 compared to
a net loss from operations of $498,000 in 1998. The improvement was due
primarily to the reduction of costs as gross revenues remained essentially
unchanged.

During the second quarter of 1999, the Company added seven new contracts that
are expected to add approximately $770,000 of revenue, and approximately
$310,000 of EBITDA, during the third and fourth quarters of 1999. The Company's
current pipeline of projects remains strong; however, lack of resources may
limit the Company's ability to implement these projects in a timely manner.

                                                                              17
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

Six Months Ended June 30, 1999 Compared with Six Months Ended June 30, 1998

<TABLE>
<CAPTION>
                                         Six Months Ended June 30       Six Months Ended June 30                Variance
                                        -----------------------------------------------------------------------------------------
                                                1999                            1998                         2Q 99 vs 2Q 98
                                        ----------------------------------------------------------------------------------------

<S>                                  <C>              <C>           <C>                <C>              <C>             <C>
Gross revenues                         $  22,044,252    100.00%       $  22,135,701       100.00%         $    (91,449)    -0.41%
                                       -----------------------        --------------------------          ----------------------
Expenses:
    General & administrative               1,149,370      5.21%           1,680,392         7.59%             (531,022)   -31.60%
    Salaries & employee benefits          12,012,331     54.49%          13,024,569        58.84%           (1,012,238)    -7.77%
    Legal & professional                     322,364      1.46%             193,815         0.88%              128,549     66.33%
    Rent & utilities                         784,226      3.56%             755,296         3.41%               28,930      3.83%
    Taxes & insurance                        476,718      2.16%             593,475         2.68%             (116,757)   -19.67%
    Technical operating expenses           3,296,204     14.95%           3,129,276        14.14%              166,928      5.33%
    Provision (credit) for                   102,566      0.47%             257,775         1.16%             (155,209)   -60.21%
    doubtful accounts
    Depreciation and amortization          3,250,121     14.74%           3,494,443        15.79%             (244,322)    -6.99%
                                       -----------------------        --------------------------          ----------------------
    Total operating expenses              21,393,900     97.05%          23,129,041       104.49%           (1,735,141)    -7.50%
                                       -----------------------        --------------------------          ----------------------
Equity in earnings of
 unconsolidated partnership                  150,000      0.68%             179,843         0.81%              (29,843)   -16.59%
                                       -----------------------        --------------------------          ----------------------
Income (loss) from continuing
 operations before income taxes        $     800,352      3.63%       $    (813,497)       -3.68%         $  1,613,849    198.38%
                                       =======================        ==========================          ======================
Earnings before Interest, Taxes,
    Depreciation, and Amortiaztions    $   4,050,473     18.37%       $   2,680,946        12.11%         $  1,369,527     51.08%
                                       =======================        ==========================          ======================

Income (loss) from continuing
 operations
    before incomes taxes per share:
    Basic                               $       0.07                  $       (0.07)
                                       ==============                 =============
    Diluted                             $       0.07                  $       (0.06)
                                       ==============                 =============

Weighted average common shares
 oustanding:

    Basic                                 11,482,008                     11,056,601
    Diluted                               12,290,082                     12,605,891

</TABLE>


NOTE:  Numbers may not add due to rounding.



Six Months Ended June 30, 1999 Compared with Six Months Ended June 30, 1998

During the six months ended June 30, 1999, gross revenues remained essentially
unchanged from the comparable prior year period. Operating expenses decreased by
approximately 7.5% from $23,129,000 to $21,394,000. The principal areas that
decreased in 1999 were general and administrative expense, which decreased by
approximately 31.6% from $1,680,000 to $1,149,000, and salaries and employee
benefits, which decreased by approximately 7.8% from $13,025,000 to $12,012,000.
Salaries and benefits, and general and administrative expenses, decreased as a
result of cost-cutting and restructuring efforts undertaken during the prior 12
months. Depreciation and amortization decreased by $244,000 as a result of
goodwill written off during 1998. Operating income increased $1,614,000 to
$800,000 in 1999 compared to a net loss from operations of $813,000 in 1998. The
improvement was due primarily to the expense reductions described above.

                                                                              18
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

For the six months ended June 30, 1999, EBITDA was $4,050,000 (annualized $8.1
million), representing a slight improvement from the annualized results of the
first quarter of 1999. The Company had total debt of $48.1 million, or
approximately 5.9 times annualized EBITDA. The Company's scheduled principal and
interest obligations for the next 12 months are approximately $9.1 million, and
thus the Company must refinance or retire debt through proceeds of an equity
infusion in order to meet its obligations.

Liquidity and Capital Resources

The Company's liquidity and capital resources are strained. As a result of
declines in the performance of debt-financed acquisitions, the Company's cash
flow is not adequate to fund debt service and continuing operations. The Company
refinanced its capital lease debt in late 1998 and early 1999, and is attempting
to replace its senior lender with an asset-based lender whose principal
covenants will be based on the collateral value underlying its loan, with less
emphasis on ratios of cash flows to funded debt and fixed charges. Management
believes that an asset-based facility is appropriate to its circumstances, and
will provide additional capacity to fund new projects and provide working
capital. Although the Company has received a commitment from one potential
refinancing source, the Company is uncertain as to whether or when it will be
able to complete such refinancing.

In May 1998, the Company and its subsidiaries entered into an amendment of the
revolving credit and term loan facility with their senior lender, Chase Bank of
Texas, N.A. ("Chase"), providing for up to $2,500,000 in available revolving
credit (or, if less, 75% of the Company's and its subsidiaries' eligible
accounts receivable from time to time), and an acquisition term loan facility of
up to $17,500,000 in maximum principal amount.  Pursuant to the amendment, the
Company rolled over the outstanding borrowings of $2,500,000 on the revolving
credit facility into the term loan facility.

In June 1998, the Company and its subsidiaries entered into a further amendment
of the revolving credit and term loan facility with Chase, whereby the revolving
credit facility was extended. In connection with the amendment, Chase waived
certain prior financial covenant defaults.

Effective as of December 31, 1998, the Company and its subsidiaries entered into
a further amendment of the revolving credit and term loan facility with Chase.
This amendment provides for the implementation of a new financial covenant
structure.  The Company has also entered in to an amendment of its subordinated
note agreement with Prudential, containing amendments consistent with the Chase
amendment.

The new financial covenant structure temporarily suspends the Fixed Charge
Coverage Ratio, Funded Debt to EBITDA Ratio, and Senior Debt to EBITDA Ratio,
and requires the Company to maintain minimum EBITDA levels.

                                                                              19
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES

In addition, the new structure limits unleveraged capital expenditures, and
prohibits the Company from incurring additional debt or selling assets. At June
30, 1999, the company was not in compliance with the required minimum EBITDA
level.

Also under the December 31, 1998 amendment, the outstanding $7,952,930 principal
balance of the Company's term loan begins a five-year amortization program to
commence July 15, 1999, and the remaining availability under that facility is
cancelled. The revolving facility was reduced to $1 million with a shortened
maturity of January 31, 1999 (which was thereafter extended to June 30, 1999),
and on June 30, 1999, the outstanding principal balance of the revolving credit
loans was $1,000,000. All of the Chase loans bear interest at varying rates,
depending on the Company's leverage from time to time. The revolving facility
matured June 30, 1999 and has not been repaid or renewed. The Company was also
unable to make the required $400,000 principal payment due under its term
facility on July 15, 1999. On July 8, 1999, the Company received from Chase a
notice of event of default.

In April 1997, the Company issued and sold to Prudential $20,000,000 in
principal amount of senior subordinated promissory notes (the "Subordinated
Notes").  The Subordinated Notes bear interest at a fixed rate of 10.5% per
annum, and mature as to principal in equal one-third installments on April 17 of
each of 2003, 2004 and 2005.  The Subordinated Notes may be prepaid by the
Company under certain circumstances (including the requirement of certain "make-
whole" prepayment premiums), and the Company may be required (at the option of
the holders of the Subordinated Notes) to purchase the Subordinated Notes in the
event of a change in control of the Company.  The Subordinated Notes also
require the Company and its subsidiaries to comply with certain financial
covenants, including limitations on certain other indebtedness.

The Company is in default in payment two quarterly interest payments (each in
the amount of $525,000) that were due on the Subordinated Notes on April 17,
1999 and July 17, 1999, respectively. The Company is also in default as of June
30, 1999 with respect to financial covenants of its subordinated note agreement
with Prudential. The defaults to Prudential also constitute events of default
under the Company's loan agreement with Chase.

The Company and its subsidiaries have also entered into various financing
arrangements with commercial leasing companies and equipment suppliers, bearing
interest ranging from 7.7% to 12.1% per annum.

In 1998, the Company received net proceeds of approximately, $1,801,858 from the
exercise of warrants, and $811,136 from the exercise of options under the
Company's various stock option plans.

At December 31, 1998, the Company was not in compliance with the tangible net
worth requirement for continued listing on the Nasdaq National Market. In
February 1999, Nasdaq notified the Company that the Company would be required to
demonstrate, to Nasdaq's satisfaction, that the Company would be able to
promptly cure this deficiency. In March 1999, the Company received further
notice form Nasdaq that the Company's common stock would be promptly delisted
from the Nasdaq National Market (the "NNM") absent a further showing of a plan
of compliance. The Company appealed the proposed delisting, and an oral hearing
was held before Nasdaq on May 20, 1999, at which time the Company provided
details regarding the proposed merger with MAII, which would have had the effect
of restoring compliance with the tangible net worth requirement. Thereafter, the
Company's common stock ceased to meet the minimum bid price required for
continued listing On August 10, 1999, the Company and MAII announced that they
were unable to consummate the proposed merger, and on August 11, 1999, the
Company's stock was delisted from the NNM and trades on the OTC Bulletin Board.
The termination of the proposed merger with MAII, and the delisting of the
Company's common stock, can be expected to have a material adverse effect on the
Company's ability to refinance its indebtedness and/or raise additional equity
capital.

The Company's continuation as a going concern is dependent on its ability to
refinance its senior debt, to obtain additional financing or refinancing as may
be required, raise additional equity capital, and continue to increase cash flow
from operations.  The Company's financial statements classify all of its senior
and subordinated debt as current liabilities, but do not include any other
adjustments relating to the recoverability of assets and classification of
liabilities that might be necessary should the Company be unable to continue as
a going concern.

Management believes that completion of the proposed refinancing of its senior
debt facility, restructuring and modification of its subordinated debt, and
possibly additional equity capital will be required in order for the Company to
continue in its current form.  In the event that the Company is unable to
consummate these proposed transactions, management believes that the Company
will be required to obtain other sources of financing or reorganize its affairs
through a bankruptcy.


Trends and Uncertainties

The Company's future revenues and results of operations may be substantially
affected by proposed reforms of the nation's healthcare system and by potential
reductions in reimbursement rates and policies imposed by Medicare and other
third-party reimbursement programs (from which the Company derives a material
portion of its receipts).  Continuing pressures on pricing structures applicable
to the Company's services, or inability to renew existing contracts, could have
the effect of reducing the Company's revenues and operating profit margins.  The
Company is unable to predict the nature or extent of any such changes and/or the
effects thereof on the Company.

                                                                              20
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES
                                    Part II
                               OTHER INFORMATION


Items 1-5. Not Applicable

Item 6.  Exhibits and Reports on Form 8-K.

(a) Exhibits to this report:

Exhibit 11.1:  Computation re: Computation of Earnings Per Share

(b) The Company did not file any report on Form 8-K during the quarterly period
    ended June 30, 1999.

                                                                              21
<PAGE>

                DIAGNOSTIC HEALTH SERVICES, INC. & SUBSIDIARIES


                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                        DIAGNOSTIC HEALTH SERVICES, INC.




                                            /S/ MAX W. BATZER
  -----------------------------------------------------------
                                                Max W. Batzer
                                        Chairman and Director



                                           /S/ BRAD A. HUMMEL
  -----------------------------------------------------------
                                               Brad A. Hummel
  Chief Executive Officer, President, Chief Operating Officer
                                                 and Director



                                    /S/ CHRISTOPHER L. TURNER
  -----------------------------------------------------------
                                        Christopher L. Turner
                                      Chief Financial Officer
                             and Principal Accounting Officer




                                        /S/ JAMES R. ANGELICA
  -----------------------------------------------------------
                                            James R. Angelica
                                                     Director


                                       Date:  August 13, 1999



                                                                              22