Document:

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                                                                   EXHIBIT 10.20

                             EMPLOYMENT AGREEMENT
                             --------------------

     Employment Agreement (the "Agreement"), dated May 4,1998 by and between
Physicians Resource Group, Inc., a Delaware corporation (the "Company"), and Ann
Chaney ("Employee").

                              W I T N E S S E T H:
                              -------------------

     Section 1.  Employment. The Company hereby agrees to employ Employee, and
Employee hereby accepts employment by the Company, upon the terms and subject to
the conditions hereinafter set forth.

     Section 2.  Duties. Employee shall serve as the Chief Accounting Officer of
the Company. Employee agrees to devote her full time and best efforts to the
performance of her duties to the Company. Employee and the Company acknowledge
that the corporate finance office of the Company will be located in Houston,
Texas. In the event the Company moves the corporate finance office away from
Houston, Texas, Employee shall be entitled to terminate this Employment
Agreement in accordance with the provisions of Section 6(d) hereof. Employee
acknowledges that the corporate finance office is currently located in Dallas,
Texas and agrees to commute to Dallas for a reasonable period of time to
coordinate the transition of such office to Houston, Texas. The Company
acknowledges that the process of relocating the corporate finance function to
Houston will begin immediately.

     Section 3.  Term. Except as otherwise provided in Section 6 hereof, the
term of this Agreement shall be for two years ("Initial Term"), commencing on
the date of this Agreement. This Agreement shall be automatically renewed
thereafter for successive one year terms ("Renewal Term") unless either party
gives to the other written notice of termination no fewer than thirty (30) days
prior to the expiration of any such term that it does not wish to extend this
Agreement.

     Section 4.  Compensation and Benefits. In consideration for the services of
the Employee hereunder, the Company will compensate Employee as follows:

          (a)    Base Salary. Commencing on the date hereof, Employee shall be
     entitled to receive a base salary of $100,000 per annum or as increased
     from time to time by executive management.

          (b)    Bonus. During the Term of employment, Employee shall be
     eligible to receive an annual cash bonus in an amount determined in
     accordance with the employee incentive plan adopted by the Board of
     Directors of the Company on January 24, 1998 (the "Employee Incentive
     Plan"). The Employee Incentive Plan shall provide Employee with a target
     bonus opportunity of thirty-five percent (35%) of Employee's salary range
     midpoint for each calendar year in the Term of employment if the Company
     attains specified budgeted financial performance objectives for such year,
     and an over achievement bonus opportunity of five percent (5%) of target
     bonus for each one percent (1%) the Company exceeds such

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     specified budgeted financial performance objectives. The financial
     performance objectives shall be determined by the Board of Directors on an
     annual basis each year during the Term of employment. With respect to
     calendar year 1998, the financial performance objectives of the Employee
     Incentive Plan are set forth on Exhibit A, attached hereto and incorporated
     herein by reference. All bonuses payable to Employee under the Employee
     Incentive Plan shall be determined and paid within the first quarter of the
     year following the year for which such bonus is payable.

          (c)    Benefits. During the term of this Agreement, Employee shall be
     entitled to participate in and receive benefits under any and all employee
     benefit plans and programs which are from time to time generally made
     available to the executive employees of the Company, subject to approval
     and grant by the appropriate committee of the Board of Directors of the
     Company with respect to programs calling for such approvals or grants.

          (d)    Options. To induce Employee to enter into employment with the
     Company and as a condition of Employee's acceptance of such employment,
     effective upon the date of acceptance of employment, the Company shall
     grant to Employee an option to purchase Twenty-Five Thousand (25,000)
     shares of the Common Stock, par value $0.01 per share, of the Company (the
     "Common Stock,") at an exercise price of Four and One Six-Teenth Dollars
     ($4.0625) per share (the "Option"). To evidence the Option, promptly after
     the execution of this Agreement, the Company shall execute and deliver to
     the Employee an option agreement, which shall contain terms and conditions
     consistent with this Agreement and shall provide, among other things, for
     the following:

                 (i)    The Option shall be vested one-third immediately, one-
     third on the first anniversary and one-third on the second anniversary,
     with an ultimate expiration date of ten years from the date of grant.

                 (ii)   The grant of the Option shall not be subject to any
     approval by stockholders of the Company.

                 (iii)  The shares of Common Stock of the Company issuable under
     the Option shall be fully registered and freely tradeable and shall be of
     the same class of voting common stock of the Company, with the same rights,
     powers and privileges, as is currently publicly traded on the New York
     Stock Exchange and registered with the United States Securities and
     Exchange Commission. Without limiting the foregoing, such shares shall not
     be subject to any restriction, on transfer, on exercise of any right, power
     or privilege or otherwise, not applicable to all of such class of voting
     common stock generally.

                 (iv)   In the event of a change in control or threatened change
     in control of Employer, Employee's options granted pursuant to Section 4(d)
     shall become immediately vested and exercisable. A "change in control" will
     be deemed to have occurred for purposes hereof (i) upon the occurrence of a
     change of stock ownership of the Company of a nature

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     that would be required to be reported in response to Item 6(e) of Schedule
     14A promulgated under the Exchange Act, and any successor Item of a similar
     nature; or (ii) upon the acquisition of beneficial ownership, directly or
     indirectly, by any person (as such term is used in Sections 13(d) and
     14(d)(2) of the Exchange Act) of securities of the Company representing 33%
     or more of the combined voting power of the Company's then outstanding
     securities; or (iii) a change during any period of two consecutive years of
     a majority of the members of the Board for any reason, unless the election,
     or the nomination for election by the Company's stockholders, of each
     director was approved by a vote of a majority of the directors then still
     in office who were directors at the beginning of the period; provided that
     a change in control will not be deemed to have occurred for purposes hereof
     with respect to any person meeting the requirements of clauses (i) and (ii)
     of Rule 13d-1(b)(1) promulgated under the Exchange Act.

     Section 5.  Expenses. It is acknowledged by the parties that Employee, in
connection with the services to be performed by her pursuant to the terms of
this Agreement, will be required to make payments for travel (including travel
and housing in Dallas during the transition period), entertainment of business
associates and similar expenses. The Company will reimburse Employee for all
reasonable expenses of types authorized by the Company and incurred by Employee
in the performance of her duties hereunder. Employee will comply with such
budget limitations and approval and reporting requirements with respect to
expenses as the Company may establish from time to time.

     Section 6.  Termination. Employee's employment hereunder will commence on
the date of this Agreement and continue until the end of the Initial Term and
any renewals of such term, except that the employment of Employee hereunder will
terminate earlier upon the occurrence of the following events:

          (a)    Death or Disability. Employee's employment will terminate
     immediately upon the death of Employee during the term of her employment
     hereunder or, at the option of the Company, in the event of Employee's
     disability, upon 30 days notice to Employee. Employee will be deemed
     disabled if, as a result of Employee's incapacity due to physical or mental
     illness, Employee shall have been absent from her duties with the Company
     on a full-time basis for 120 consecutive business days. In the event of the
     termination of this Agreement pursuant to this subsection, Employee will
     not be entitled to any severance pay or other compensation except for any
     portion of her base salary accrued but unpaid from the last monthly payment
     date to the date of termination, accrued bonus, and expense reimbursements
     under Section 5 hereof for expenses incurred in the performance of her
     duties hereunder prior to termination.

          (b)    For Cause. The Company may terminate the Employee's employment
     for "Cause" upon five (5) days written notice by the Company to Employee.
     For purposes of this Agreement, a termination will be for Cause if: (i)
     Employee willfully and continuously fails to perform her duties with the
     Company (other than any such failure resulting from

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     incapacity due to physical or mental illness), (ii) Employee willfully
     engages in gross misconduct materially and demonstrably injurious to the
     Company or (iii) Employee has been convicted of a felony. In the event of
     the termination of this Agreement pursuant to this subsection, Employee
     will not be entitled to any severance pay or other compensation except for
     any portion of her base salary accrued but unpaid from the last monthly
     payment date to the date of termination and expense reimbursements under
     Section 5 hereof for expenses incurred in the performance of her duties
     hereunder prior to termination.

          (c)    By Company Without Cause. The Company may terminate this
     Agreement at any time for any reason without cause. Upon termination of
     this Agreement pursuant to this subsection, the Company will pay Employee,
     as Employee's sole remedy in connection with such termination, severance
     pay in the amount determined by multiplying Employee's monthly base salary
     at the rate in effect immediately preceding the termination of Employee's
     employment by twelve (12) months. The Company will also pay Employee the
     portion of her base salary accrued but unpaid from the last monthly payment
     date to the date of termination, accrued bonus, and expense reimbursements
     under Section 5 hereof for expenses incurred in the performance of her
     duties hereunder prior to termination.

          (d)    By Employee for Good Reason. Employee may terminate this
     Agreement for good reason in the event of either (i) termination of the
     employment of Peter G. Dorflinger as President and Pam Westbrook as Chief
     Financial Officer of the Company for any reason (including or (ii) the
     relocation of the corporate accounting office to a location other than
     Houston, Texas. Upon termination of this Agreement pursuant to this
     subsection, the Company will pay Employee severance pay in the amount
     determined by multiplying Employee's monthly base salary at the rate in
     effect immediately preceding the termination of Employee's employment, by
     twelve (12) months. The Company will also pay Employee the portion of her
     base salary accrued but unpaid from the last monthly payment date to the
     date of termination, accrued bonus, and expense reimbursements under
     Section 5 hereof for expenses incurred in the performance of her duties
     hereunder prior to termination.

     Section 7.  Effect of Termination on Options. The Employee has been granted
options to purchase shares of the Company's Common Stock and may continue to be
granted such options from time to time. The effect of the termination of the
Employee's employment on such options shall be determined by this Section.

          (a)    If the Employee voluntarily leaves the employment of the
     Company in breach of this Agreement, her options will automatically expire.

          (b)    If Employee dies or becomes disabled, as defined in Section
     6(a), while employed by the Company, her options shall become fully vested
     and exercisable on the date of her death or disability and shall expire
     twelve (12) months thereafter unless by its terms any of such options
     expire sooner.

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          (c)    If the Employee's employment with the Company is terminated for
     Cause, as defined in Section 6(b), her options will automatically expire.

          (d)    If the Employee's employment with the Company is terminated
     without cause during the Initial Term, pursuant to Section 6(c) or by
     Employee for Good Reason pursuant to Section 6(d), her options will remain
     exercisable and will vest and expire in accordance with the terms of the
     applicable option agreements.

          (e)    If the Employee's employment with the Company is terminated
     without cause subsequent to the Initial Term, pursuant to Section 6(c), her
     options shall be exercisable (to the extent exercisable on the date of
     termination of employment) at any time within three months following the
     date of termination of employment unless by its terms the option expires
     earlier.

     Section 8.  Confidential Information. Employee recognizes and acknowledges
that certain assets of the Company and its affiliates, including without
limitation information regarding customers, pricing policies, methods of
operation, proprietary computer programs, sales, products, profits, costs,
markets, key personnel, formulae, product applications, technical processes, and
trade secrets (hereinafter called "Confidential Information") are valuable,
special and unique assets of the Company and its affiliates. Employee will not,
during or after her term of employment, disclose any of the Confidential
Information to any person, firm corporation, association, or any other entity
for any reason or purpose, whatsoever, directly or indirectly, except as may be
required pursuant to her employment hereunder, unless and until such
Confidential Information becomes publicly available other than as a consequence
of the breach by Employee of her confidentiality obligations hereunder. In the
event of the termination of her employment, whether voluntary or involuntary and
whether by the Company or Employee, Employee will deliver to the Company all
documents and data pertaining to the Confidential Information and will not take
with her any documents or data of any kind or any reproductions (in whole or in
part) of any items relating to the Confidential Information.

     Section 9.  Noncompetition. Until one (1) year after termination of
Employee's employment hereunder, Employee will not (i) engage directly or
indirectly, alone or as a shareholder, partner, officer, director, employee or
consultant of any other business organization, in any business activities which
relate to the acquisition and consolidation of medical practices which were
either conducted by the Company at the time of Employee's termination or
"Proposed to be Conducted" (as defined herein) by the Company at the time of
such termination (the "Designated Industry"), (ii) divert to any competitor of
the Company in the Designated Industry any customer of Employee, or (iii)
solicit or encourage any officer, employee, or consultant of the Company to
leave its employ for employment by or with any competitor of the Company in the
Designated Industry. The parties hereto acknowledge that Employee's
noncompetition obligations hereunder will not preclude Employee from (i) owning
less than 5% of the common stock of any publicly traded corporation conducting
business activities in the Designated Industry or (ii) serving as an officer,
director, stockholder or employee of an entity engaged in the healthcare
industry whose business operations are not competitive with those of the
Company. "Proposed to be Conducted," as used herein, shall

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include those business activities which are the subject of a formal, written
business plan approved by the Board of Directors prior to termination of
Employee's employment and which the Company takes material action to implement
within 12 months of the termination of Employee's employment. Employee will
continue to be bound by the provisions of this Section 9 until their expiration
and will not be entitled to any compensation from the Company with respect
thereto. If at any time the provisions of this Section 9 are determined to be
invalid or unenforceable, by reason of being vague or unreasonable as to area,
duration or scope of activity, this Section 9 will be considered divisible and
will become and be immediately amended to only such area, duration and scope of
activity as will be determined to be reasonable and enforceable by the court or
other body having jurisdiction over the matter; and Employee agrees that this
Section 9 as so amended will be valid and binding as though any invalid or
unenforceable provision had not been included herein.

     Section 10.  General.

          (a)     Notices. Except as otherwise provided herein, all notices and
     other communications hereunder will be in writing or by written
     telecommunication, and will be deemed to have been duly given if delivered
     personally or if mailed by certified mail, return receipt requested or by
     written telecommunication, to the relevant address set forth below, or to
     such other address as the recipient of such notice or communication will
     have specified to the other party hereto in accordance with this Section
     10(a):

     If to the Company, to:                  with a copy to:

     Physicians Resource Group, Inc.         Physicians Resource Group, Inc.
     Three Lincoln Centre, Suite 1540        Three Lincoln Centre, Suite 1540
     5430 LBJ Freeway                        5430 LBJ Freeway
     Dallas, TX 75240                        Dallas, Texas 75240
     Attn: President                         Attn: General Counsel
     Fax No.: (972) 982-8297                 Fax No.: (972) 982-8299

     If to Employee, to:

     Ms. Ann Chaney
     10 Troy Lane
     West Columbia, TX 77468

          (b)     Withholding; No Offset. All payments required to be made by
     the Company under this Agreement to Employee will be subject to the
     withholding of such amounts, if any, relating to federal, state and local
     taxes as may be required by law. No payment under this Agreement will be
     subject to offset or reduction attributable to any amount Employee may owe
     to the Company or any other person.

          (c)     Equitable Remedies. Each of the parties hereto acknowledges
     and agrees that

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     upon any breach by Employee of her obligations under Section 9 hereof, the
     Company will have no adequate remedy at law, and accordingly will be
     entitled to specific performance and other appropriate injunctive and
     equitable relief.

          (d)    Severability. If any provision of this Agreement is held to be
     illegal, invalid or unenforceable, such provision will be fully severable
     and this Agreement will be construed and enforced as if such illegal,
     invalid or unenforceable provision never comprised a part hereof, and the
     remaining provisions hereof will remain in full force and effect and will
     not be affected by the illegal, invalid or unenforceable provision or by
     its severance herefrom. Furthermore, in lieu of such illegal, invalid or
     unenforceable provision, there will be added automatically as part of this
     Agreement a provision as similar in its terms to such illegal, invalid or
     unenforceable provision as may be possible and be legal, valid and
     enforceable.

          (e)    Waivers. No delay or omission by either party hereto in
     exercising any right, power or privilege hereunder will impair such right,
     power or privilege, nor will any single or partial exercise of any such
     right, power or privilege preclude any further exercise thereof or the
     exercise of any other right, power or privilege.

          (f)    Counterparts. This Agreement may be executed in multiple
     counterparts, each of which will be deemed an original, and all of which
     together will constitute one and the same instrument.

          (g)    Captions. The captions in this Agreement are for convenience of
     reference only and will not limit or otherwise affect any of the terms or
     provisions hereof.

          (h)    Reference to Agreement. Use of the words "herein," "hereof,"
     "hereto" and the like in this Agreement refer to this Agreement only as a
     whole and not to any particular subsection or provision of this Agreement,
     unless otherwise noted.

          (i)    Binding Agreement. This Agreement will be binding upon and
     inure to the benefit of the parties and will be enforceable by the personal
     representatives and heirs of Employee and the successors of the Company. If
     Employee dies while any amounts would still be payable to him hereunder,
     such amounts will be paid to Employee's estate. This Agreemcnt is not
     otherwise assignable by Employee.

          (j)    Entire Agreement. This Agreement contains the entire
     understanding of the parties, supersedes all prior agreements and
     understandings relating to the subject matter hereof and may not be amended
     except by a written instrument hereafter signed by each of the parties
     hereto.

          (k)    Governing Law. This Agreement and the performance hereof will
     be construed and governed in accordance with the laws of the State of
     Texas, without regard to

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     its choice of law principles.

     EXECUTED as of the date and, year first written above.

                                             PHYSICIANS RESOURCE GROUP, INC.

                                             /s/ Peter G. Dorflinger
                                             -----------------------------------
                                             Peter G. Dorflinger
                                             President

                                             EMPLOYEE

                                             /s/ Ann Chaney
                                             -----------------------------------
                                             Ann Chaney

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                                                                   EXHIBIT 10.23

Management Services
Agreement

     This Management Services Agreement ("Agreement") is entered into effective
the 1/st/ day of January, 2000 ("Effective Date") by and between Physicians
Resource Group, Inc., a Delaware corporation ("PRG") and AmSurg Corp., a
Tennessee corporation ("AmSurg").

     WHEREAS, PRG, through its subsidiaries and affiliates, owns and operates
ophthalmology surgery centers throughout the United States; and

     WHEREAS, PRG and AmSurg have executed a letter of intent describing a
proposed transaction by which AmSurg would purchase an undivided majority
interest in the assets or the equity interest of the centers; and

     WHEREAS, the parties have been in negotiations since April 1, 1999 over the
terms of a definitive Acquisition Agreement (the "Acquisition Agreement"); and

     WHEREAS, AmSurg is in the business of providing certain management services
to ambulatory surgery centers; and

     WHEREAS, the parties desire to preserve the continued operations and
profitability of the Managed Centers during the period between the Effective
Date and the closing of the transactions contemplated by the Acquisition
Agreement; and

     WHEREAS, PRG desires AmSurg to oversee operations of the Managed Centers,
and AmSurg desires to provide such services to PRG pursuant to this Agreement.

     NOW THEREFORE, in consideration of the premises and the mutual promises and
covenants contained herein, PRG and AmSurg do hereby agree as follows:

1.   Engagement

     On behalf of all of the entities affiliated with PRG that own an interest
in the Managed Centers described in Section 2 hereof, PRG engages AmSurg and
AmSurg agrees to provide the management services set forth in Section 3 of this
Agreement upon the terms and conditions hereinafter set forth.

2.   Nature of Relationship

2.1  AmSurg shall perform all services described in Section 3 hereof for the
account of and as agent of PRG, with respect to the centers listed on Schedule 1
                                                                      ----------
attached hereto, as it may be amended from time to time to add or delete a
center (the "Managed Centers").  Except as otherwise specifically provided in
Section 4, AmSurg shall bear the costs and expenses of all services provided by
AmSurg pursuant to this Agreement.

2.2  Notwithstanding any provision to the contrary, the direction, coordination
and management of all medical aspects of Managed Centers programs and
operations, and the supervision of persons providing medical services, shall be
under the direction and control of the Medical Director of each Managed Center.

3.   Management Services

     AmSurg shall have the responsibility to supervise, consult in and oversee
the business operations of the Managed Centers.  Subject to the terms of this
Agreement and the general direction and control of the governing body of each
entity that owns a Managed Center, AmSurg shall have the responsibility to, and
PRG shall take all actions necessary to grant AmSurg access to all accounts so
that AmSurg may, coordinate all business and administrative activities
pertaining to each Managed Center, including, but not in any way limited to, the
following:

3.1  Assist the Managed Center in operating in an efficient and business like
manner;

3.2  Coordinate the purchase or lease of inventory, supplies and pharmaceuticals
necessary for the operation of the Managed Center which will be purchased or
leased at a level consistent with historical practice;

3.3  Coordinate all reasonable and necessary actions to maintain all licenses,
permits and certificates required for the operation of the Managed Center, and
to ensure that all appropriate certification and accreditation available to the
Managed Center's operations are obtained;

3.4  Coordinate, together with the Medical Director, ongoing programs to
increase community and payor awareness of the Managed Center;

3.5  Negotiate contracts for the provision of services by the Managed Center
with appropriate third party payors, both public and private;

3.6  Provide input and make recommendations to the governing body on the overall
charge structure of the Managed Center, and arrange for payment of such charges
by others, when appropriate;

3.7  Oversee and direct the personnel performing accounting and bookkeeping
services for the Managed Center, including but not limited to, all actions
necessary to (1) maintain the books of account, including all journals and
ledgers, check register and payroll records, (2) post all

Management Services Agreement/Page 1
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patient and other charges, including necessary analyses and corrections, (3)
establish adequate receivable, credit and collection policies and procedures,
(4) assist the billing and collections personnel in performing billing and
collections services in a manner consistent with historical practice, (5)process
vendors' invoices and other accounts payable on a current basis, (6) prepare
payroll checks from time sheet summaries prepared under AmSurg's supervision,
(7) prepare monthly bank reconciliations, and (8) establish patient direct pay
and insurance billing procedures;

3.8  Develop and revise, subject to approval by the governing body of each
Managed Center, all necessary policies and operating procedures pertaining to
each aspect of the Managed Center's operations;

3.9  In conjunction with the Medical Director, hire, supervise, discipline and
discharge all personnel working in the Managed Center and providing direct
patient care, as needed;

3.10 Arrange for the purchase of necessary insurance coverage for the Managed
Center;

3.11 Establish and administer accounting procedures and controls and systems for
the development, preparation, and keeping of records and books of accounting
relating to the business and financial affairs of the Managed Center;

3.12 Subject to the prior written approval of PRG, distribute to the partners or
members of each Managed Center, on a pro rata basis according to ownership
interests, and on a frequency consistent with the applicable provisions of the
operating agreement or partnership agreement of each Managed Center, but in no
event less frequently than quarterly, the available cash flow of the appropriate
Managed Center, which equals the cash funds of the Managed Center, less
provisions for payment of all outstanding and unpaid current cash obligations as
well as reasonably anticipated cash expenses and obligations;

3.13 Prepare unaudited annual financial statements for the operations of the
Managed Center and deliver a copy thereof to PRG and the governing body of the
Managed Center; furnish PRG and the governing body of the Managed Center in a
timely fashion with monthly operating reports and other reports reasonably
requested by PRG or any member of the governing body of a Managed Center;

3.14 Prepare capital and operating budgets for approval by the governing body of
each Managed Center;

3.15 Make capital expenditures as approved or directed by the governing body of
each Managed Center;

3.16 Provide PRG and each Managed Center with the information necessary in order
to prepare the state and federal tax returns of PRG and each Managed Center; and

3.17 Perform all duties herein required of it in good faith and with reasonable
diligence so as to assure that the Managed Centers efficiently provide
appropriate quality health care to patients.

     Notwithstanding the foregoing, the parties acknowledge and agree that the
process of initiating the provision of management services to each of the
Managed Centers will involve a transition period, and the management of certain
Managed Centers may not become the responsibility of AmSurg immediately on the
Effective Date. In such event, the parties agree to cooperate in the exchange of
pertinent information concerning the operation of such Managed Center, and
further agree to use commercially reasonable efforts to complete the transition
of management responsibility to AmSurg as soon as reasonably practicable. In no
event will the failure of AmSurg to provide services specified in Section 3
hereof with respect to a Managed Center for which AmSurg has not been able to
assume complete management responsibility to on or after the Effective Date be
deemed a breach by AmSurg of any of the provisions of this Agreement. The
parties acknowledge and agree that PRG does not have control over the physicians
using the facilities of the Managed Centers and although PRG will use
commercially reasonable efforts, it cannot unilaterally cause those physicians
to cooperate with AmSurg's management activities.

4.   Compensation for Services Rendered By AmSurg

4.1  For all services rendered by AmSurg under this Agreement, PRG shall pay
AmSurg a fee (the "Management Fee") equal to 2% of net collections of each
Managed Center, to be paid monthly in advance on or before the 10th day of each
month, based on the parties' reasonable estimate as to what the net collections
of the Managed Centers will be during the month; provided, however, that upon
the execution of this Agreement, and subject to Sections 4.2 and 4.3 hereof, PRG
shall prepay $308,620, which is the first six (6) months of the Management Fee
payable hereunder, based on the parties' reasonable estimate as to what the net
revenues of the Managed Centers will be during the next six (6) months.

     The parties will determine the actual net collections of each Managed
Center on a monthly basis, and at the end of the first six (6) months of this
Agreement and each month thereafter, the Management Fee for such period will be
determined and AmSurg or PRG, as appropriate, will pay to the other party within
ten (10) days after such determination, the amount of any overpayment or
underpayment.

4.2  In the event that the closing of the transactions contemplated by the
Acquisition Agreement occurs prior to the expiration of six (6) months from the
Effective Date, the parties agree to calculate the Management Fee that would
have been payable during the term and AmSurg or PRG, as appropriate, will pay to
the other party within ten (10) days after such determination, the amount of any
overpayment or

Management Services Agreement/Page 2
<PAGE>

underpayment. In addition, in the event that this Agreement terminates with
respect to a Managed Center, either because PRG no longer owns an interest
therein or AmSurg determines that it will not acquire the assets or equity
interest thereof, then the parties will calculate the Management Fee that would
have been payable until such date, and AmSurg or PRG, as appropriate, will pay
to the other party within ten (10) days after such determination, the amount of
any overpayment or underpayment with respect to that particular Managed Center.

4.3  In the event that this Agreement terminates for any reason other than (i)
the closing of the transactions contemplated by the Acquisition Agreement, or
(ii) as the result of a breach by AmSurg prior to the closing of the
transactions contemplated by the Acquisition Agreement, the parties agree that
AmSurg shall be entitled to retain, as liquidated damages and not as a penalty,
all of the Management Fees paid hereunder for the costs incurred by AmSurg in
order to be able to perform its services hereunder.

4.4  In the event that this Agreement terminates as the result of a breach
hereof by AmSurg prior to the closing of the transactions contemplated by the
Acquisition Agreement, the parties agree that AmSurg will return to PRG that
portion of the Management Fee that has not been earned as of the termination
date.  Such payment will be made within ten (10) days after the parties have
determined the Management Fee that was earned during the term.

5.   Term

     The initial term of this Agreement shall commence on the Effective Date and
shall terminate on the closing of the transactions contemplated by the
Acquisition Agreement.

     Notwithstanding the foregoing, this Agreement shall terminate immediately
in the event that PRG no longer owns an interest, direct or indirect, in any of
the Managed Centers; and further, provided that this Agreement shall terminate
with respect to a particular Managed Center if and when AmSurg determines that
it will not acquire the assets or equity interest of such Managed Center.

6.   Events Excusing Performance

     AmSurg shall not be liable to PRG or any entity that owns a Managed Center
for failure to perform any of the services required hereunder in the event of
strike, lockouts, calamities, acts of God, unavailability of supplies or other
events over which AmSurg has no control for so long as such events continue, and
for a reasonable period of time thereafter.

7.   Medical and Financial Records

     7.1  Upon termination of this Agreement, the Managed Centers shall retain
all patient medical records maintained by the Managed Centers or AmSurg in the
name of the Managed Center.  At all times during the term of this Agreement,
access to patient records shall be governed by applicable state and federal laws
governing confidentiality of patient records.

7.2  During the term of this Agreement and thereafter, the Managed Centers or
their respective designees shall have reasonable access during normal business
hours to the Managed Center and the records created and maintained by AmSurg
which shall be the property of the Managed Centers, including but not limited
to, records of collection, expenses and disbursements as kept by AmSurg in
performing AmSurg's obligations under this Agreement, and the Managed Centers
may copy any or all such records. During the term of this Agreement and
thereafter, AmSurg or its designee shall have reasonable access during normal
business hours to the Managed Center's records as they apply to the Managed
Center and AmSurg may copy at its expense any or all of such records.  To the
extent practicable, records will be maintained on the premises of the Managed
Centers.

8.   Default and Termination

     Either party shall be in default of this Agreement if it fails to perform
any material term hereof or any amendments hereto, and such failure is not cured
within thirty (30) days after receipt of written notification of such failure
from the party not in default.  In the event of such default, the non-defaulting
party shall have the right to terminate this Agreement immediately by written
notice to the other party.

     Additionally, PRG shall have the right to terminate this Agreement by
delivery of written notice to AmSurg in the event there occurs a material
adverse change in the financial condition or business operations of AmSurg that
PRG in good faith determines materially adversely affects or is reasonably
likely to materially adversely affect the ability of AmSurg to perform its
obligations under this Agreement.

     In the event of termination of this Agreement for any reasons other than
the closing of the transactions contemplated by the Acquisition Agreement or in
the event that this Agreement is terminated with respect to a specific Managed
Center pursuant to Section 4.2 hereof, on termination AmSurg will provide to PRG
copies of all books and records generated by AmSurg in connection with AmSurg's
provision of management services under this Agreement generally or with respect
to the terminated Managed Center, as the case may be.

9.   Assignment

     AmSurg may assign its rights and duties under this Agreement to a direct or
indirect wholly owned subsidiary of AmSurg; provided that no additional fees and
expenses other than the fees and expenses described herein will be paid by PRG
as a result of such assignment without the prior approval of PRG and that AmSurg
will remain

Management Services Agreement/Page 3
<PAGE>

primarily liable for the performance of its obligations hereunder. Upon any such
assignment, all references to AmSurg in this Agreement shall be deemed to
include such assignee. Except as provided above, this Agreement may not be
assigned by either party without the prior written consent of the other party.

10.  Rights Cumulative; No Waiver

     Any rights or remedies of either party in the event of default are intended
to be cumulative rather than exclusive.  Moreover, if either party chooses not
to insist upon strict performance of any provision of this Agreement, such
choice shall not impair its rights to insist on strict performance in the event
of subsequent acts of default and the waiver by a party of any breach of any
provision of this Agreement by the other party shall not operate or be construed
as a waiver of any subsequent breach by that party.

11.  Access to Books and Records of Managed Centers by Governmental Officials

     Upon written request of the Secretary of Health and Human Services or the
Comptroller General or any other duly authorized representatives thereof, AmSurg
or any other related organization providing services with a value or cost of Ten
Thousand Dollars ($10,000) or more over a twelve (12) month period, shall make
available to the Secretary those contracts, books, documents and records
necessary to verify the nature and extent of the cost of providing its services.
Such inspection shall be available up to four (4) years after such services are
rendered.

12.  Notice

     Any notice required or permitted to be given under this Agreement shall be
in writing and shall be deemed to have been properly made and delivered when
mail first class, postage prepaid, certified or registered mail, or overnight
courier service as follows:

if to AmSurg:

     AmSurg Corp.
     20 Burton Hills Boulevard
     Nashville, TN   37215
     Attn:    Claire M. Gulmi
     Fax:   (615) 665-3600

with a copy to:
     Cynthia Y. Reisz
     Bass, Berry & Sims PLC
     2700 First American Center
     Nashville, TN 37238-2700
     Fax:  (615) 742-2783

if to PRG:
     Physicians Resource Group, Inc.
     5005 Riverway, Suite 400
     Houston, TX 77056
     Attn: Michael W. Yeary
     Fax:  (713) 629-5780

with a copy to:
     James S. Ryan
     Jackson Walker LLP
     901 Main Street, Suite 6000
     Dallas, TX 75202
     Fax:  (214) 953-5822

or to such other address as either party may from time to time specify by
written notice to the other party. Any such notice shall be deemed to be given
as of the date so delivered, if delivered personally, as of the date on which
the same was deposited in the United States mail, postage prepaid, addressed and
sent as aforesaid, or on the date received if sent by electronic facsimile.

13.  Miscellaneous

13.1 Authorization for Agreement.  The execution, delivery and performance of
this Agreement has been duly and validly authorized, executed and delivered by
PRG and AmSurg, and this Agreement constitutes the valid and enforceable
obligation of the parties in accordance with its terms.  PRG has the power and
authority to enter into this Agreement on behalf of each entity that owns a
Managed Center.

13.2 Complete Agreement; Severability. This instrument contains the entire
agreement between the parties with respect to the subject matter hereof.  All
prior negotiations and understandings are merged herein. This Agreement may not
be modified unless agreed to in a writing signed by both parties hereto.

     Should any part of this Agreement be declared invalid by a court or
regulatory body of competent jurisdiction, such decision shall not affect the
validity of the remaining parts, and they shall remain in full force and effect.

13.3 Applicable Law. This Agreement shall be construed and enforced according to
the laws of the State of Tennessee.

13.4 No Presumption Created. The parties acknowledge that they have
independently negotiated the provisions of this Agreement, that they have relied
upon their own counsel as to matters of law and application and that neither
party has relied on the other party with regard to such matters. The parties
expressly agree that there shall be no presumption created as a result of either
party having prepared in whole or in part any provisions of this Agreement.

Management Services Agreement/Page 4
<PAGE>

13.5 Governing Bodies.  AmSurg shall make no change to the composition of the
governing bodies of the Managed Centers as in existence on the Effective Date.

13.  Jurisdiction.  PRG AND AMSURG AGREE THAT IN THE EVENT THAT PRG FILES A
     ------------
BANKRUPTCY PETITION UNDER CHAPTER 11 OF THE UNITED STATES BANKRUPTCY CODE,
AMSURG AND PRG HEREBY IRREVOCABLY SUBMIT TO THE EXCLUSIVE JURISDICTION OF THE
UNITED STATES BANKRUPTCY COURT IN WHICH THE PETITION IS FILED FOR THE PURPOSE OF
ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT AND AMSURG
AND PRG HEREBY IRREVOCABLY AGREE THAT ALL CLAIMS IN RESPECT TO SUCH ACTION OR
PROCEEDING SHALL BE HEARD AND DETERMINED IN SUCH COURT.  AMSURG AND PRG AGREE
THAT A FINAL JUDGMENT IN ANY SUCH ACTION OR PROCEEDING SHALL BE CONCLUSIVE AND
MAYBE ENFORCED IN OTHER JURISDICTIONS BY SUIT ON THE JUDGMENT OR IN ANY OTHER
MANNER PROVIDED BY LAW.

     IN WITNESS WHEREOF, the parties have caused this Agreement to be executed
by their duly authorized representatives as of the day and year first above
written.

AMSURG CORP.

By: /s/ Ken P. McDonald
    ---------------------------------------------

Title: PRESIDENT & CEO
       ------------------------------------------

PHYSICIANS RESOURCE GROUP, INC.

By: /s/ Michael Yeary
    ---------------------------------------------

Title: PRESIDENT
       ------------------------------------------

Management Services Agreement/Page 5
<PAGE>

                                   SCHEDULE 1
                                   ----------

                                MANAGED CENTERS

<TABLE>
<S>                                                     <C>
1.   Alexandria Laser and Surgery Center                9.   Ambulatory Eye Surgery
     4100 Parliament Drive                                   3900 Veterans Boulevard
     Alexandra, LA 71303                                     Metairie, LA 70002

2.   American Surgery Centers of Alabama, Ltd.          10.  Center for Advanced Eye Surgery
     2802 Ross Clark Circle SW                               3920 Bee Ridge Road, Bldg. F, Suite C
     Dothan, AL 36301                                        Sarasota, FL 34233

3.   American Surgery Centers of South Florida, Ltd.    11.  Shepherd Eye Surgicenter, Ltd.
     (d/b/a a Foundation for Advanced Eye Care)              3575 Pecos McLeon
     3737 Pine Island Road                                   Las Vegas, NV 89121
     Sunrise, FL 33351

4.   American Surgery Center of Glendale, Ltd.          12.  Laser and Eye Surgery Center of the South, Inc.
     607 North Central Avenue, Suite 103                     1101 Audubon Avenue, Suite S-4
     Glendale, CA 91203                                      Thibodaux, LA 70301

5.   PRG Tennessee I, Inc.                              13.  Central Texas Day Surgery Center, LP
     d/b/a Physicians Surgery Center                         1817 Southwest Dodgen Loop
     207 Stonebridge                                         Temple, TX 76502
     Jackson, TN 38305

6.   The Darr Eye Clinic Medical Group, Inc.            14.  Washburn Surgery Center, Inc.
     44139 Monterey Avenue, Suite A                          920 Southwest Washburn Avenue
     Palm Desert, CA 92266                                   Topeka, KS 66606

7.   Inland Eye Institute                               15.  Ridge Lake Ambulatory Surgery Center
     1880 East Washington Street                             825 Ridge Lake Boulevard
     Colton, CA 92324                                        Memphis, TN 38120

8.   Key Whitman Surgery Center                         16.  VanDyck Ambulatory Surgery Center
     2801 Lemmon Avenue West, Suite 400                      1024 Kelley Drive
     Dallas, TX 75204                                        Paris, TN 38242
</TABLE>

Management Services Agreement/Page 6

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