Exhibit 3.77

Delaware	PAGE 1
The First State

     I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED ARE TRUE AND CORRECT COPIES OF ALL DOCUMENTS ON FILE OF “CROCKETT PHO, LLC” AS RECEIVED AND FILED IN THIS OFFICE.

     THE FOLLOWING DOCUMENTS HAVE BEEN CERTIFIED:

     CERTIFICATE OF FORMATION, FILED THE TWENTY-THIRD DAY OF JUNE, A.D. 2000, AT 9 O’CLOCK A.M.

     CERTIFICATE OF AMENDMENT, FILED THE TWENTY-SECOND DAY OF JANUARY, A.D. 2002, AT 10 O’CLOCK A.M.

     AND I DO HEREBY FURTHER CERTIFY THAT THE AFORESAID CERTIFICATES ARE THE ONLY CERTIFICATES ON RECORD OF THE AFORESAID LIMITED LIABILITY COMPANY, “CROCKETT PHO, LLC”.

		/s/ Jeffrey W. Bullock,
		Jeffrey W. Bullock, Secretary of State
		AUTHENTICATION: 8619892
3250369      8100H		DATE: 03-14-11
110292353
You may verify this certificate online
at corp. delaware. gov/authver. shtml

STATE OF DELAWARE
SECRETARY OF STATE
DIVISION OF CORPORATIONS
FILED 09:00 AM 06/23/2000
001323128 - 3250369

Certificate Of Formation
OF
Crockett PHO, LLC

     The undersigned, an authorized natural person, for the purpose of forming a limited liability company, under the provisions and subject to the requirements of the State of Delaware, particularly Chapter 18, Title 6 of the Delaware Code and the acts amendatory thereof and supplemental thereto, and known, identified, and referred to as the Delaware Limited Liability Company Act (the “Act”), hereby certifies that:

     FIRST: The name of the limited liability company is Crockett PHO, LLC (the “Company”).

     SECOND. The address of the registered office and the name and address of the registered agent of the Company required to be maintained by Section 18-104 of the Act is Corporation Service Company, 1013 Centre Road, Wilmington, Delaware 19805.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Formation as of June 23, 2000.

By:	/s/ William F. Carpenter III
	William F. Carpenter III
	Authorized Person

STATE OF DELAWARE
SECRETARY OF STATE
DIVISION OF CORPORATIONS
FILED 10: 00 AM 01/22/2002
020040967 - 3250369

CERTIFICATE OF AMENDMENT
OF
Crockett PHO, LLC

     1. The name of the limited liability company is Crockett PHO, LLC

     2. The Certificate of Formation of the limited liability company is hereby amended as follows:

     The name and address of the registered agent is The Corporation Trust Company Corporation Trust Center, 1209 Orange Street, Wilmington, Delaware 19801.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Amendment of Crockett PHO, LLC this 15 day of January 2002.

Crockett PHO, LLC
 

/s/ William F. Carpenter III  

William F. Carpenter III, 

Title Manager