CUSIP No. 705324 10 1                         Page 1 of 6 Pages

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                                 (Rule 13d-101)

             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
            TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
                                  RULE 13d-2(a)

                               (Amendment No. 3)1

                  Pediatrix Medical Group, Inc.
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                                (Name of Issuer)

                      Common Stock, $.01 par value
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                         (Title of Class of Securities)

                                   705324 10 1
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                                 (CUSIP Number)

Welsh, Carson, Anderson                   Othon A. Prounis, Esq.
  & Stowe                                 Reboul, MacMurray, Hewitt,
320 Park Avenue, Suite 2500                Maynard & Kristol
New York, New York  10022                 45 Rockefeller Plaza
Attention: Jonathan M. Rather             New York, New York  10111
Tel. (212) 893-9500                       Tel. (212) 841-5700

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                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                November 15, 2001
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             (Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is
filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the
following box [ ].





------------------
         1The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter disclosures provided in a prior cover page. The information required on
the remainder of this cover page shall not be deemed to be "filed" for the
purpose of Section 18 of the Securities Exchange Act of 1934 or otherwise
subject to the liabilities of that section of the Act but shall be subject to
all other provisions of the Act.




CUSIP No. 705324 10 1                         Page 2 of 6 Pages



1)   Name of Reporting Person            Welsh, Carson, Ander-
       and I.R.S. Identification           son & Stowe VII, L.P.
     No. of Above Person, if
     an Entity (Voluntary)
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2)   Check the Appropriate Box                  (a) [X]
     if a Member of a Group                     (b) [ ]
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3)   SEC Use Only

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4)   Source of Funds                             Not Applicable

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5)   Check if Disclosure of
     Legal Proceedings Is                        Not Applicable
     Required Pursuant to
     Items 2(d) or 2(e)
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6)   Citizenship or Place
     of Organization                             Delaware
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Number of                        7)  Sole Voting 2,443,816 shares of
Shares Beneficially                   Power      Common Stock
Owned by Each
Reporting Person
                                 ---------------------------------------------
                                 8)   Shared Voting
                                       Power                      -0-
                                 ---------------------------------------------
                                 9)   Sole Disposi- 2,443,816 shares of
                                       tive Power   Common Stock
                                 ---------------------------------------------
                                 10)  Shared Dis-
                                       positive Power             -0-
                                 ---------------------------------------------
11)  Aggregate Amount Beneficially                2,443,816 shares of
      Owned by Each Reporting Person              Common Stock
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12)  Check if the Aggregate
      Amount in Row (11)
      Excludes Certain Shares
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13)  Percent of Class
      Represented by                              10.0%
      Amount in Row (11)
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14)  Type of Reporting
      Person                                      PN





CUSIP No. 705324 10 1                         Page 3 of 6 Pages


1)   Name of Reporting Person            WCAS Healthcare
      and I.R.S. Identification           Partners, L.P.
     No. of Above Person, if
     an Entity (Voluntary)
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2)   Check the Appropriate Box                  (a) [X]
     if a Member of a Group                     (b) [ ]
------------------------------------------------------------------------------
3)   SEC Use Only
------------------------------------------------------------------------------
4)   Source of Funds                            Not Applicable

------------------------------------------------------------------------------
5)   Check if Disclosure of
     Legal Proceedings Is                       Not Applicable
     Required Pursuant to
     Items 2(d) or 2(e)
------------------------------------------------------------------------------
6)   Citizenship or Place
     of Organization                            Delaware
------------------------------------------------------------------------------
Number of                                   7)   Sole Voting  57,673 shares of
Shares Beneficially                               Power       Common Stock
Owned by Each
Reporting Person
                                            ----------------------------------
                                            8)   Shared Voting
                                                  Power            -0-
                                            ----------------------------------
                                            9)   Sole Disposi- 57,673 shares of
                                                  tive Power   Common Stock
                                            -----------------------------------
                                            10)  Shared Dis-
                                                  positive Power  -0-
                                            -----------------------------------
11)  Aggregate Amount Beneficially               57,673 shares of
      Owned by Each Reporting Person             Common Stock
-------------------------------------------------------------------------------
12)  Check if the Aggregate
      Amount in Row (11)
      Excludes Certain Shares
-------------------------------------------------------------------------------
13)  Percent of Class
     Represented by                         0.2%
     Amount in Row (11)
-------------------------------------------------------------------------------
14)  Type of Reporting
     Person                                             PN




CUSIP No. 705324 10 1                         Page 4 of 6 Pages



                         Amendment No. 3 to Schedule 13D
                         -------------------------------

          Reference is hereby made to the statement on Schedule 13D filed with
the Commission on May 22, 2001, as amended by Amendment No. 1 thereto filed on
May 29, 2001 and Amendment No. 2 thereto filed on August 28, 2001 (as so
amended, the "Schedule 13D"). Terms defined in the Schedule 13D are used herein
as so defined.

          Item 5 is hereby amended and restated to read in its entirety as
follows:

Item 5.  Interest in Securities of the Issuer.
         ------------------------------------

          The following information is based on a total of 24,452,329 shares of
Common Stock outstanding as of October 31, 2001, as reported in the Issuer's
Report on Form 10-Q for the period ended September 30, 2001 filed with the
Commission on November 9, 2001:

                  (a)

                  WCAS VII and VII Partners
                  -------------------------

          WCAS VII owns 2,443,816 shares of Common Stock, or approximately 10.0%
of the Common Stock outstanding. VII Partners, as the general partner of WCAS
VII, may be deemed to beneficially own the securities owned by WCAS VII.

                  WCAS HP and HP Partners
                  -----------------------

          WCAS HP owns 57,673 shares of Common Stock, or approximately 0.2% of
the Common Stock outstanding. HP Partners, as the general partner of WCAS HP,
may be deemed to beneficially own the securities owned by WCAS HP.

                  General Partners of VII Partners and HP Partners
                  -------------------------------------------------

          (i) Patrick J. Welsh owns 23,892 shares of Common Stock, or less than
0.1% of the Common Stock outstanding.

          (ii)Russell L. Carson owns 23,892 shares of Common Stock, or less than
0.1% of the Common Stock outstanding.

          (iii) Bruce K. Anderson owns 23,892 shares of Common Stock, or less
than 0.1% of the Common Stock outstanding.

          (iv) Thomas E. McInerney owns 18,949 shares of Common Stock, or less
than 0.1% of the Common Stock outstanding.

          (v) Robert A. Minicucci owns 8,238 shares of Common Stock, or less
than 0.1% of the Common Stock outstanding.

          (vi) Anthony J. deNicola owns 2,471 shares of Common Stock, or





CUSIP No. 705324 10 1                         Page 5 of 6 Pages

less than 0.1% of the Common Stock outstanding.

          (vii) Paul B. Queally owns 4,943 shares of Common Stock, or less than
0.1% of the Common Stock outstanding.

          (b) The general partners of VII Partners and HP Partners may be deemed
to share the power to vote or direct the voting of and to dispose or direct the
disposition of the Common Stock owned by WCAS VII and WCAS HP, respectively.
Each of the general partners of VII Partners and HP Partners disclaims
beneficial ownership of shares of Common Stock other than those he owns directly
or by virtue of his or her indirect pro rata interest, as a general partner of
VII Partners and/or HP Partners, as the case may be, in the securities owned by
WCAS VII and/or WCAS HP.

          (c) On dates between November 12, 2001 and November 15, 2001, WCAS VII
sold an aggregate 314,061 shares of Common Stock in open market transactions, at
an average price of $33.99 per share.

          (d) Except as described in this statement, no person has the power to
direct the receipt of dividends on or the proceeds of sales of the shares of
Common Stock owned by WCAS VII or WCAS HP.

          (e) Not Applicable.






CUSIP No. 705324 10 1                         Page 6 of 6 Pages













                                    Signature
                                    ---------

          After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.


                                    WELSH, CARSON, ANDERSON & STOWE VII, L.P.
                                    By:  WCAS VII Partners, L.P.,
                                            General Partner


                                    By: /s/ Jonathan Rather
                                       --------------------------
                                            General Partner


                                    WCAS HEALTHCARE PARTNERS, L.P.
                                    By:  WCAS HP Partners, General Partner


                                    By: /s/ Jonathan Rather
                                       --------------------------
                                            Attorney-in-Fact

Dated: November 20, 2001