MD Pediatrix Medical Group Inc

FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES                                                                                   
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940                       

1. Name and Address of Reporting Person * ORDAN MARK S	2. Issuer Name and Ticker or Trading Symbol MEDNAX, INC. [ MD ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) Chief Executive Officer
(Last)          (First)          (Middle) 1301 CONCORD TERRACE	3. Date of Earliest Transaction (MM/DD/YYYY) 8/30/2021
(Street) SUNRISE, FL 33323 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	8/30/2021		M		95000 (1)	A	$17.65	303425	D
Common Stock	8/30/2021		S		95000	D	$35.09 (2)	208425	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Employee Stock Option (right to buy)	$17.65	8/30/2021		M			95000	(3)	10/10/2023 (3)	Common Stock	95000	$17.65	455331	D

Explanation of Responses:
(1)	Shares acquired upon exercise of Stock Options granted pursuant to Issuer's Amended and Restated 2008 Incentive Compensation Plan (the "Plan").
(2)	The price reported in Column 4 is a weighted average price. The reported securities were sold in multiple transactions with prices ranging from $34.965 to $35.235 for a weighted average sales price of $35.09. The reporting person undertakes to provide the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(3)	Option to purchase shares of common stock granted on July 12, 2020 ("Grant Date") under the Plan that vested as follows: (i) 175,747 shares became exercisable when the Issuer's common stock price closed at $22 per share (or above) for 40 consecutive trading days before the third anniversary of the Grant Date (the "Performance End Date"); (ii) 181,160 shares became exercisable when the Issuer's common stock price closed at $25 per share (or above) for 40 consecutive trading days before the Performance End Date; and (iii) 193,424 shares became exercisable when the Issuer's common stock price closed at $29 per share (or above) for 40 consecutive trading days before the Performance End Date, in each case subject to the reporting person's Employment Agreement and provided that no option shares vested prior to the one-year anniversary of the Grant Date.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ORDAN MARK S 1301 CONCORD TERRACE SUNRISE, FL 33323	X		Chief Executive Officer

Signatures
/s/ Dominic J. Andreano, as Attorney-in-Fact		8/31/2021
**Signature of Reporting Person		Date