Document:

<PAGE>
                                                                   EXHIBIT 10.22

                              AMENDMENT NUMBER 1 TO
                               SECURITY AGREEMENT

                           Dated as of August 14, 2001

         This Amendment Number 1 (the "Amendment") to the Security Agreement,
dated as of August 14, 2001, is among Pediatrix Medical Group, Inc., a Florida
corporation (the "Company"), the Material Related Entities of the Company from
time to time party hereto and Fleet National Bank, formerly known as The First
National Bank of Boston, as agent (the "Agent") for itself and the other Lenders
under the Credit Agreement (as defined below).

         Reference is made to the Security Agreement (the "Security Agreement")
dated as of November 1, 2000 among the Company, the Related Entities (as defined
in the Credit Agreement as it was in effect on November 1, 2000) of the Company
from time to time party thereto and the Agent, for itself and the other Lenders
under the Credit Agreement.

         WHEREAS, in connection with the amendment and restatement this day of
the Credit Agreement, the parties hereto wish to amend certain provisions of the
Security Agreement.

1.       Reference to Credit Agreement; Definitions.

         1.1.     Reference to Credit Agreement. Reference is made to the Credit
Agreement, originally dated as of June 27, 1996, as amended and restated as of
November 1, 2000 and as further amended and restated as of the date of this
Amendment, among the Company, the Material Related Entities of the Company from
time to time party thereto, the Lenders from time to time party thereto,
including Fleet National Bank, formerly known as The First National Bank of
Boston, both in its capacity as a Lender and in its capacity as Agent and
Firstar Bank, both in its capacity as a Lender and in its capacity as
Syndication Agent [additional agents].

         1.2.     Definitions. Terms used in this Agreement but not defined
herein are used as defined in the Credit Agreement.

2.       Amendments.

         2.1.     Section 1. The first sentence of Section 1 of the Security
Agreement is hereby amended by deleting it in its entirety and substituting
therefor:

                  "Reference is made to the Amended and Restated
                  Credit Agreement, originally dated as of June 27,
                  1996, as amended and restated as of November 1, 2000
                  and as further amended and restated as of the date
                  hereof, and as from time to time in effect (the
                  "Credit Agreement"), among the Company, the Material
                  Related Entities of the Company from time to time
                  party thereto, the Lenders and the Agent."

                                      -1-

<PAGE>

         2.2.     Section 1. The last sentence of the first paragraph of Section
1 of the Security Agreement is hereby amended by deleting it in its entirety and
substituting therefor:

                  "References to `the date hereof' mean November 1, 2000."

3.       Miscellaneous. Except to the extent specifically modified hereby, the
provisions of the Security Agreement shall remain unmodified, and the Security
Agreement, as amended herein, is hereby confirmed as being in full force an
effect. Each of the parties hereto hereby affirms that it is bound by the
provisions of the Security Agreement, as amended by this Amendment and,
accordingly, that each such Person is an Obligor. This Amendment may be executed
in any number of counterparts, which together shall constitute one instrument,
and shall be governed by and construed in accordance with the domestic
substantive laws of The Commonwealth of Massachusetts without giving effect to
any choice or conflict of laws provisions or rule that would cause the
application of the domestic substantive laws of any other jurisdiction.

             [The remainder of this page intentionally left blank.]

                                      -2-

<PAGE>

         IN WITNESS WHEREOF, each of the undersigned has duly executed this
Amendment (or caused this Amendment to be executed on its behalf by its officer
or representative thereunto duly authorized) under seal as of the date first
written above.

                                 PEDIATRIX MEDICAL GROUP, INC. (Florida)

                                 By: /s/ Karl B. Wagner
                                         Karl B. Wagner, Chief Financial Officer

                                 ALASKA NEONATOLOGY ASSOCIATES, INC.
                                 AUGUSTA NEONATOLOGY ASSOCIATES, P.C.
                                 DES MOINES PERINATAL CENTER, P.C.
                                 FOOTHILL MEDICAL GROUP, INC.
                                 FORT WORTH NEONATAL ASSOCIATES, P.A.
                                 OBSTETRIX MEDICAL GROUP OF CALIFORNIA, A
                                    PROFESSIONAL CORPORATION
                                 MAGELLA HEALTHCARE GROUP, L.P.
                                 MAGELLA MEDICAL ASSOCIATES, P.A.
                                 MAGELLA MEDICAL ASSOCIATES OF GEORGIA, P.C.
                                 MAGELLA MEDICAL ASSOCIATES MIDWEST, P.C.
                                 MAGELLA MEDICAL GROUP, INC. (d/b/a MAGELLA
                                    MEDICAL GROUP, A MEDICAL CORPORATION)
                                 MAGELLA NEVADA, LLC
                                 MAGELLA TEXAS, LLC
                                 MARCIA J. PERNOLL, M.D. PROF. CORP. d/b/a
                                    OBSTETRIX MEDICAL GROUP OF NEVADA, LTD.
                                 MOUNTAIN STATES NEONATOLOGY, INC.
                                 NEONATAL AND PEDIATRIC INTENSIVE CARE
                                    MEDICAL GROUP, INC.
                                 NEONATOLOGY ASSOCIATES, P.A.
                                 NEONATOLOGY-CARDIOLOGY ASSOCIATES, P.A.
                                 NEWBORN SPECIALISTS, P.C.
                                 OBSTETRIX MEDICAL GROUP OF COLORADO, P.C.
                                 OBSTETRIX MEDICAL GROUP OF KANSAS AND
                                    MISSOURI, P.A.
                                 OBSTETRIX MEDICAL GROUP OF TEXAS, P.A.
                                 OZARK NEONATAL ASSOCIATES, INC.

                                 By: /s/ Karl B. Wagner
                                         Karl B. Wagner, Attorney-in-Fact

                                      -3-

<PAGE>

                                 PEDIATRIX MEDICAL GROUP OF ARKANSAS, P.A.
                                 PEDIATRIX MEDICAL GROUP OF CALIFORNIA, A
                                    PROFESSIONAL CORPORATION
                                 PEDIATRIX MEDICAL GROUP OF COLORADO, P.C.
                                 PEDIATRIX MEDICAL GROUP OF GEORGIA, P.C.
                                 PEDIATRIX MEDICAL GROUP OF INDIANA, P.C.
                                 PEDIATRIX MEDICAL GROUP OF KANSAS, P.A.
                                 PEDIATRIX MEDICAL GROUP OF MISSOURI, P.C.
                                 PEDIATRIX MEDICAL GROUP OF OKLAHOMA, P.C.
                                 PEDIATRIX MEDICAL GROUP OF PENNSYLVANIA, P.C.
                                 PEDIATRIX MEDICAL GROUP OF PUERTO RICO, P.S.C.
                                 PEDIATRIX MEDICAL GROUP OF TEXAS, P.A.
                                 PEDIATRIX MEDICAL GROUP NEONATOLOGY AND
                                    PEDIATRIC INTENSIVE CARE SPECIALISTS
                                    OF NEW YORK, P.C.
                                 PEDIATRIX MEDICAL GROUP
                                 PEDIATRIX OF MARYLAND, P.A.
                                 PERINATAL PEDIATRICS, P.A.
                                 PERNOLL MEDICAL GROUP OF NEVADA, LTD.
                                    d/b/a PEDIATRIX MEDICAL GROUP OF NEVADA
                                 SAVANNAH NEONATOLOGY, INC.
                                 ST. JOSEPH NEONATOLOGY CONSULTANTS, P.A.
                                 TEXAS MATERNAL FETAL MEDICINE, P.A.

                                 By: /s/ Karl B. Wagner
                                         Karl B. Wagner, Attorney-in-Fact

                                 PEDIATRIX MEDICAL GROUP OF OHIO CORP.

                                 By: /s/ Karl B. Wagner
                                         Karl B. Wagner, Secretary

                                      -4-

<PAGE>

                                 ASSOCIATES IN NEONATOLOGY, INC.
                                 BNA ACQUISITION COMPANY, INC.
                                 CENTRAL OKLAHOMA NEONATOLOGY
                                    ASSOCIATES, INC.
                                 FLORIDA REGIONAL NEONATAL ASSOCIATES, P.A.
                                 GNPA ACQUISITION COMPANY, INC.
                                 MAGELLA HEALTHCARE CORPORATION
                                 MNPC ACQUISITION COMPANY, INC.
                                 NACF ACQUISITION COMPANY, INC.
                                 NEONATAL SPECIALISTS, LTD.
                                 NSPA ACQUISITION COMPANY, INC.
                                 OBSTETRIX MEDICAL GROUP OF ARIZONA, P.C.
                                 OBSTETRIX MEDICAL GROUP OF DELAWARE, INC.
                                 OBSTETRIX MEDICAL GROUP OF PENNSYLVANIA, P.C.
                                 OBSTETRIX MEDICAL GROUP OF PHOENIX, P.C.
                                 OBSTETRIX MEDICAL GROUP OF
                                    WASHINGTON, INC., P.S.
                                 OBSTETRIX MEDICAL GROUP, INC.
                                 PALM BEACH NEO ACQUISITIONS, INC.
                                 PASCV ACQUISITION COMPANY, INC.
                                 PEDIATRIX MEDICAL GROUP OF DELAWARE, INC.
                                 PEDIATRIX MEDICAL GROUP OF FLORIDA, INC.
                                 PEDIATRIX MEDICAL GROUP OF NEW MEXICO, P.C.
                                 PEDIATRIX MEDICAL GROUP OF SOUTH CAROLINA, P.A.
                                 PEDIATRIX MEDICAL GROUP OF TENNESSEE, P.C.
                                 PEDIATRIX MEDICAL GROUP OF
                                    WASHINGTON, INC., P.S.
                                 PEDIATRIX MEDICAL GROUP, INC. (Utah)
                                 PEDIATRIX MEDICAL GROUP, P.A.
                                 PEDIATRIX MEDICAL GROUP, P.C. (Virginia)
                                 PEDIATRIX MEDICAL GROUP, P.C. (West Virginia)
                                 PMG ACQUISITION CORP.
                                 PNA ACQUISITION CO., INC.
                                 RPNA ACQUISITION COMPANY, INC.
                                 SCPMC ACQUISITION CO.
                                 SNCA ACQUISITION COMPANY, INC.

                                 By: /s/ Karl B. Wagner
                                         Karl B. Wagner, Treasurer

                                      -5-

<PAGE>

                                 FLEET NATIONAL BANK

                                 By /s/ Carol Paige Castle
                                        Carol Paige Castle
                                        Director

                                        Fleet National Bank
                                        100 Federal Street
                                        Mail Stop: MADE 100010B
                                        Boston, Massachusetts 02110
                                        Telecopy: (617) 434-2472

                                        With a copy to:

                                        Fleet National Bank
                                        Mail Stop: NJRP45004P
                                        301 Carnegie Center
                                        Princeton, NJ 08540-6227
                                        Telecopy: (609) 799-8984

                                      -6-<PAGE>
                                                                   EXHIBIT 10.23

                             PEDIATRIX MEDICAL GROUP

                      AMENDED AND RESTATED CREDIT AGREEMENT

                      Originally Dated as of June 27, 1996
                 As Amended and Restated as of November 1, 2000
                  As Amended and Restated as of August 14, 2001

                                 Amendment No. 1

                           Dated as of August 29, 2001

                      FLEET NATIONAL BANK, Agent and Lender
                 FIRSTAR BANK N.A., Syndication Agent and Lender
                      [HSBC BANK USA], ________ and Lender
                        FLEET SECURITIES, INC., Arranger

<PAGE>

            AMENDMENT NO. 1 TO AMENDED AND RESTATED CREDIT AGREEMENT

         This Agreement, dated as of August 29, 2001 (this "Agreement"), is
among Pediatrix Medical Group, Inc., a Florida corporation, the Material Related
Entities of Pediatrix Medical Group, Inc. from time to time party hereto, and
the Lenders from time to time party hereto including Fleet National Bank,
formerly known as The First National Bank of Boston, both in its capacity as a
Lender and in its capacity as an Agent, Firstar Bank N.A., both in its capacity
as a Lender and in its capacity as Syndication Agent, and [HSBC Bank USA], both
in its capacity as a Lender and in its capacity as _________. The parties agree
as follows:

         1.       Credit Agreement; Definitions. This Agreement amends the
Credit Agreement originally dated as of June 27, 1996 and amended and restated
as of November 1, 2000 and as further amended and restated as of August 14, 2001
among the parties hereto (as in effect prior to giving effect to this Agreement,
the "Credit Agreement"). Terms defined in the Credit Agreement as amended hereby
(the "Amended Credit Agreement") and not otherwise defined herein are used with
the meaning so defined.

         2.       Reference to Assignment. Reference is hereby made to the
Assignment and Acceptance (the "Assignment") dated as of even date herewith
between Fleet National Bank, in its capacity as a Lender under the Credit
Agreement, and [HSBC Bank USA]. The assignment and assumption referred to in the
Assignment is acknowledged to have occurred simultaneously herewith. The Amended
Credit Agreement reflects such assignment and assumption.

         3.       Amendment of Credit Agreement. Effective upon the date all the
conditions set forth in Section 5 hereof are satisfied (the "Amendment Date"),
which conditions must be satisfied no later than the date provided therein, the
Credit Agreement is amended as follows:

                  3.1.     Amendment of Section 1.125. The definition of
         "Required Lenders" in Section 1.125 of the Credit Agreement is amended
         to read in its entirety as follows:

                           1.125. "Required Lenders" means, with respect to any
                  approval, consent, modification, waiver or other action to be
                  taken by the Agent or the Lenders under either Loan which
                  requires action by the Required Lenders, such Lenders as own
                  at least 66 2/3% of the Percentage Interests of such Loan;
                  provided, however, that with respect to any matters referred
                  to in the provisos to Section 11.6, Required Lenders means
                  such Lenders as own at least the respective portions of the
                  Percentage Interests of the relevant Loan required by Section
                  11.6.

                  3.2.     Amendment of Section 6.5.3. Section 6.5.3 of the
         Credit Agreement is amended to read in its entirety as follows:

                  6.5.3    Consolidated Net Worth. On the last day of each
         fiscal quarter of the Company and its Related Entities, Consolidated
         Net Worth shall equal at least the sum of (a) $386,389,971, plus (b)
         Net Equity Proceeds, plus (c) 50% of Consolidated Net Income (if

<PAGE>

         positive) for each fiscal quarter of the Company ending after the
         Initial Closing Date.

                  3.3.     Amendment of Section 11.1. Section 11.1 of the Credit
         Agreement is amended by replacing the table set forth therein with the
         following table:

<TABLE>
<CAPTION>
                                                                                            Percentage Interest
                                                                 Maximum Principal           of Revolving Loan
                                                                     Amount of              and Letter of Credit
                                                                  Revolving Loan                  Exposure
                                                                 -----------------          --------------------
<S>                                                              <C>                        <C>
         Fleet National Bank                                      $   30,000,000                   30.00%
         Firstar Bank N.A                                             25,000,000                   25.00
         [HSBC Bank USA]                                              25,000,000                   25.00
         UBS AG, Stamford Branch                                      15,000,000                   15.00
         The International Bank of Miami, N.A                          5,000,000                    5.00
                                                                  --------------                 --------

                  Total                                           $  100,000,000                  100.00%
                                                                  ==============                 ========
</TABLE>

         4.       Representations and Warranties. Each of the Obligors jointly
and severally represents and warrants as follows:

                  4.1.     Legal Existence, Organization. Each of the Obligors
         is duly organized and validly existing and in good standing under the
         laws of the jurisdiction of its organization, with all power and
         authority, corporate, limited liability company, partnership or
         otherwise, necessary (a) to enter into and perform this Agreement and
         the Amended Credit Agreement and (b) to own its properties and carry on
         the business now conducted or proposed to be conducted by it. Each of
         the Obligors has taken all corporate, limited liability company,
         partnership or other action required to make the provisions of this
         Agreement and the Amended Credit Agreement the valid and enforceable
         obligations they purport to be.

                  4.2.     Enforceability. Each of the Obligors has duly
         authorized, executed and delivered this Agreement. Each of this
         Agreement and the Amended Credit Agreement is the legal, valid and
         binding obligation of each of the Obligors and is enforceable against
         the Obligors in accordance with its terms.

                  4.3.     No Legal Obstacle to Agreements. Neither the
         execution, delivery or performance of this Agreement, nor the
         performance of the Amended Credit Agreement, nor the consummation of
         any other transaction referred to or contemplated by this Agreement,
         nor the fulfillment of the terms hereof or thereof, has constituted or
         resulted in or will constitute or result in:

                  (a)      any breach or termination of any agreement,
         instrument, deed or lease to which any Obligor is a party or by which
         it is bound, or of the Charter or By-laws of any Obligor;

<PAGE>

                  (b)      the violation of any law, judgment, decree or
         governmental order, rule or regulation applicable to any Obligor;

                  (c)      the creation under any agreement, instrument, deed or
         lease of any Lien (other than Liens on the Credit Security which secure
         the Credit Obligations) upon any of the assets of the Obligors; or

                  (d)      any redemption, retirement or other repurchase
         obligation of any Obligor under any Charter, By-law, agreement,
         instrument, deed or lease.

         No approval, authorization or other action by, or declaration to or
         filing with, any governmental or administrative authority or any other
         Person is required to be obtained or made by the Obligors in connection
         with the execution, delivery and performance of this Agreement or the
         performance of the Amended Credit Agreement, or the consummation of the
         transactions contemplated hereby or thereby.

                  4.4.     Defaults. Immediately before and after giving effect
         to the amendments set forth in Section 2 hereof, no Default will exist.

                  4.5.     Incorporation of Representations and Warranties. The
         representations and warranties set forth in Section 7 of the Amended
         Credit Agreement are true and correct on the date hereof as if
         originally made on and as of the date hereof.

         5.       Conditions. The effectiveness of this Agreement shall be
subject to the satisfaction of the following conditions, which conditions must
be satisfied no later than _______ __, 2001 or this Agreement shall terminate:

                  5.1.     Notes. The Borrowers shall have duly authorized,
         executed and delivered to the Agent Notes for each Lender.

                  5.2.     Legal Opinion. On the Amendment Date, the Lenders
         shall have received from Greenberg Traurig, P.A., counsel for the
         Company and its Subsidiaries, their opinion with respect to the
         transactions contemplated by this Agreement, which opinion shall be in
         form and substance satisfactory to the Lenders. The Company and its
         Subsidiaries authorize and direct their counsel to furnish the
         foregoing opinion.

                  5.3.     Officer's Certificate. The representations and
         warranties of the Obligors set forth or incorporated by reference
         herein shall be true and correct as of the Amendment Date as if
         originally made on and as of the Amendment Date; no Default shall have
         occurred on or prior to the Amendment Date; and the Agent shall have
         received a certificate to these effects signed by a Financial Officer
         in the event the Amendment Date occurs after the date hereof.

                  5.4.     Payment of Agent's Fees and Expenses. The Company
         shall have paid to the Agent (a) for the account of the Lenders, an
         amendment fee in an amount equal to ___% of the respective Commitments
         of the Lenders and (b) the reasonable legal fees and expenses of the
         Agent with respect to this Agreement and the transactions contemplated
         hereby.

<PAGE>

                  5.5.     Proper Proceedings. This Agreement, each other Credit
         Document and the transactions contemplated hereby and thereby shall
         have been authorized by all necessary proceedings of each Obligor and
         any of their respective Affiliates party thereto. All necessary
         consents, approvals and authorizations of any governmental or
         administrative agency or any other Person with respect to any of the
         transactions contemplated hereby or by any other Credit Document shall
         have been obtained and shall be in full force and effect. The Agent
         shall have received copies of all documents, including certificates,
         records of corporate, limited liability company, partnership or other
         proceedings and opinions of counsel, which the Agent may have
         reasonably requested in connection therewith, such documents where
         appropriate to be certified by proper corporate, limited liability
         company, partnership or governmental authorities.

         6.       Certain Calculations. Amounts in respect of interest,
commitment fees, Letter of Credit fees and other amounts payable under the
Amended Credit Agreement shall be payable in accordance with the terms of the
Credit Agreement as in effect prior to giving effect to the amendments provided
in Section 3 hereof for periods prior to the Amendment Date and in accordance
with the Amended Credit Agreement for periods from and after the Amendment Date.

         7.       Further Assurances. Each of the Obligors will, promptly upon
the request of the Agent from time to time, execute, acknowledge, deliver, file
and record all such instruments and notices, and take all such other action, as
the Agent deems necessary or advisable to carry out the intent and purposes of
this Agreement.

         8.       General. The Amended Credit Agreement and all of the Credit
Documents are each confirmed as being in full force and effect. This Agreement,
the Amended Credit Agreement, the Assignment and the other Credit Documents
referred to herein or therein constitute the entire understanding of the parties
with respect to the subject matter hereof and thereof and supersede all prior
and current understandings and agreements, whether written or oral. Each of this
Agreement and the Amended Credit Agreement is a Credit Document and may be
executed in any number of counterparts, which together shall constitute one
instrument, and shall bind and inure to the benefit of the parties and their
respective successors and assigns, including as such successors and assigns all
holders of any Credit Obligation. This Agreement shall be governed by and
construed in accordance with the laws (other than the conflict of law rules) of
The Commonwealth of Massachusetts.

               [The remainder of this page is intentionally blank]

<PAGE>

         Each of the undersigned has caused this Agreement to be executed and
delivered by its duly authorized officer as an agreement under seal as of the
date first above written.

                           PEDIATRIX MEDICAL GROUP, INC. (Florida)

                           By:  /s/ Karl B. Wagner
                                -------------------------------------------
                                    Karl B. Wagner, Chief Financial Officer

                           ALASKA NEONATOLOGY ASSOCIATES, INC.
                           AUGUSTA NEONATOLOGY ASSOCIATES, P.C.
                           DES MOINES PERINATAL CENTER, P.C.
                           FOOTHILL MEDICAL GROUP, INC.
                           FORT WORTH NEONATAL ASSOCIATES, P.A.
                           OBSTETRIX MEDICAL GROUP OF CALIFORNIA, A
                                PROFESSIONAL CORPORATION
                           MAGELLA HEALTHCARE GROUP, L.P.
                           MAGELLA MEDICAL ASSOCIATES, P.A.
                           MAGELLA MEDICAL ASSOCIATES OF GEORGIA, P.C.
                           MAGELLA MEDICAL ASSOCIATES MIDWEST, P.C.
                           MAGELLA MEDICAL GROUP, INC. (d/b/a MAGELLA
                                MEDICAL GROUP, A MEDICAL CORPORATION)
                           MAGELLA NEVADA, LLC
                           MAGELLA TEXAS, LLC
                           MARCIA J. PERNOLL, M.D. PROF. CORP. d/b/a OBSTETRIX
                                MEDICAL GROUP OF NEVADA, LTD.
                           MOUNTAIN STATES NEONATOLOGY, INC.
                           NEONATAL AND PEDIATRIC INTENSIVE CARE
                                MEDICAL GROUP, INC.
                           NEONATOLOGY ASSOCIATES, P.A.
                           NEONATOLOGY-CARDIOLOGY ASSOCIATES, P.A.
                           NEWBORN SPECIALISTS, P.C.
                           OBSTETRIX MEDICAL GROUP OF COLORADO, P.C.
                           OBSTETRIX MEDICAL GROUP OF KANSAS AND
                                MISSOURI, P.A.
                           OBSTETRIX MEDICAL GROUP OF TEXAS, P.A.
                           OZARK NEONATAL ASSOCIATES, INC.

                           By:  /s/ Karl B. Wagner
                                -------------------------------------------
                                    Karl B. Wagner, Attorney-in-Fact

<PAGE>

                           PEDIATRIX MEDICAL GROUP OF ARKANSAS, P.A.
                           PEDIATRIX MEDICAL GROUP OF CALIFORNIA, A
                                PROFESSIONAL CORPORATION
                           PEDIATRIX MEDICAL GROUP OF COLORADO, P.C.
                           PEDIATRIX MEDICAL GROUP OF GEORGIA, P.C.
                           PEDIATRIX MEDICAL GROUP OF INDIANA, P.C.
                           PEDIATRIX MEDICAL GROUP OF KANSAS, P.A.
                           PEDIATRIX MEDICAL GROUP OF MISSOURI, P.C.
                           PEDIATRIX MEDICAL GROUP OF OKLAHOMA, P.C.
                           PEDIATRIX MEDICAL GROUP OF PENNSYLVANIA, P.C.
                           PEDIATRIX MEDICAL GROUP OF PUERTO RICO, P.S.C.
                           PEDIATRIX MEDICAL GROUP OF TEXAS, P.A.
                           PEDIATRIX MEDICAL GROUP NEONATOLOGY AND
                                PEDIATRIC INTENSIVE CARE SPECIALISTS
                                OF NEW YORK, P.C.
                           PEDIATRIX MEDICAL GROUP
                           PEDIATRIX OF MARYLAND, P.A.
                           PERINATAL PEDIATRICS, P.A.
                           PERNOLL MEDICAL GROUP OF NEVADA, LTD.
                                d/b/a PEDIATRIX MEDICAL GROUP OF NEVADA
                           SAVANNAH NEONATOLOGY, INC.
                           ST. JOSEPH NEONATOLOGY CONSULTANTS, P.A.
                           TEXAS MATERNAL FETAL MEDICINE, P.A.

                           By:  /s/ Karl B. Wagner
                                ----------------------------------
                                   Karl B. Wagner, Attorney-in-Fact

                           PEDIATRIX MEDICAL GROUP OF OHIO CORP.

                           By:  /s/ Karl B. Wagner
                                ----------------------------------
                                   Karl B. Wagner, Secretary

<PAGE>

                           ASSOCIATES IN NEONATOLOGY, INC.
                           BNA ACQUISITION COMPANY, INC.
                           CENTRAL OKLAHOMA NEONATOLOGY
                                ASSOCIATES, INC.
                           FLORIDA REGIONAL NEONATAL ASSOCIATES, P.A.
                           GNPA ACQUISITION COMPANY, INC.
                           MAGELLA HEALTHCARE CORPORATION
                           MNPC ACQUISITION COMPANY, INC.
                           NACF ACQUISITION COMPANY, INC.
                           NEONATAL SPECIALISTS, LTD.
                           NSPA ACQUISITION COMPANY, INC.
                           OBSTETRIX MEDICAL GROUP OF ARIZONA, P.C.
                           OBSTETRIX MEDICAL GROUP OF DELAWARE, INC.
                           OBSTETRIX MEDICAL GROUP OF PENNSYLVANIA, P.C.
                           OBSTETRIX MEDICAL GROUP OF PHOENIX, P.C.
                           OBSTETRIX MEDICAL GROUP OF
                                WASHINGTON, INC., P.S.
                           OBSTETRIX MEDICAL GROUP, INC.
                           PALM BEACH NEO ACQUISITIONS, INC.
                           PASCV ACQUISITION COMPANY, INC.
                           PEDIATRIX MEDICAL GROUP OF DELAWARE, INC.
                           PEDIATRIX MEDICAL GROUP OF FLORIDA, INC.
                           PEDIATRIX MEDICAL GROUP OF NEW MEXICO, P.C.
                           PEDIATRIX MEDICAL GROUP OF SOUTH CAROLINA, P.A.
                           PEDIATRIX MEDICAL GROUP OF TENNESSEE, P.C.
                           PEDIATRIX MEDICAL GROUP OF WASHINGTON, INC., P.S.
                           PEDIATRIX MEDICAL GROUP, INC. (Utah)
                           PEDIATRIX MEDICAL GROUP, P.A.
                           PEDIATRIX MEDICAL GROUP, P.C. (Virginia)
                           PEDIATRIX MEDICAL GROUP, P.C. (West Virginia)
                           PMG ACQUISITION CORP.
                           PNA ACQUISITION CO., INC.
                           RPNA ACQUISITION COMPANY, INC.
                           SCPMC ACQUISITION CO.
                           SNCA ACQUISITION COMPANY, INC.

                           By:  /s/ Karl B. Wagner
                                ----------------------------------
                                   Karl B. Wagner, Treasurer

<PAGE>

                           FLEET NATIONAL BANK

                           By /s/ Thomas Farley, Jr.
                                ----------------------------------
                                   Thomas Farley, Jr.
                                   Group Manager

<PAGE>

                           FIRSTAR BANK N.A.

                           By:  /s/ L. Alec Blanc III
                                ----------------------------------
                                Name:    L. Alec Blanc III
                                Title:   Sr. Vice President

<PAGE>

                UBS AG, STAMFORD BRANCH

                By:  /s/ Wilfred V. Saint
                     ---------------------------------------------------------
                     Name:    Wilfred V. Saint
                     Title:   Associate Director Banking Products Services, US

                By:  /s/ Susan Brunner
                     ---------------------------------------------------------
                     Name:    Susan Brunner
                     Title:   Associate Director, Banking Products, US

<PAGE>

                           THE INTERNATIONAL BANK OF MIAMI, N.A.

                           By:  /s/ Eduardo Hornero
                                ----------------------------------
                                   Name: Eduardo Hornero
                                   Title:   Vice President

<PAGE>

                           [HSBC BANK USA]

                           By:  /s/ John A. Kaiser
                                ----------------------------------
                                   Name: John A. Kaiser
                                   Title:   Senior Vice President

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00031-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00031-of-00352.parquet"}]]