EXHIBIT 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) of the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including any and all amendments thereto) with respect to the common stock of HCA Inc. and further agree that this Joint Filing Agreement shall be included as an Exhibit to such joint filing.  In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement as of October 13, 2009.

	KKR MILLENNIUM FUND L.P.
By:	KKR Associates Millennium L.P., its general partner
By:	KKR Millennium GP LLC, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Manager
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Manager
	KKR ASSOCIATES MILLENNIUM L.P.
By:	KKR Millennium GP LLC, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Manager
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Manager

	KKR MILLENNIUM GP LLC
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Title: Attorney-in-fact for Henry R. Kravis, Manager
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Manager
	KKR 2006 FUND L.P.
By:	KKR Associates 2006 L.P., its general partner
By:	KKR 2006 GP LLC, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Manager
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Manager
	KKR ASSOCIATES 2006 L.P.
By:	KKR 2006 GP LLC, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Manager
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Manager

	KKR 2006 GP LLC
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Manager
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Manager
	OPERF CO-INVESTMENT LLC
By:	KKR Associates 2006 L.P., its manager
By:	KKR 2006 GP LLC, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Manager
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Manager
	KKR PEI INVESTMENTS, L.P.
By:	KKR PEI Associates L.P., its general partner
By:	KKR PEI GP Limited, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director
	KKR PEI ASSOCIATES L.P.
By:	KKR PEI GP Limited, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director

	KKR PEI GP LIMITED
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director
	KKR PARTNERS III, L.P.
By:	KKR III GP LLC, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Member
	KKR III GP LLC
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Member
	8 NORTH AMERICA INVESTOR L.P.
By:	KKR Associates 8 NA L.P., its general partner
By:	KKR 8 NA Limited, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director
	KKR ASSOCIATES 8 NA L.P.
By:	KKR 8 NA Limited, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director

	KKR 8 NA LIMITED
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director
	KKR FUND HOLDINGS L.P.
By:	KKR Fund Holdings GP Limited, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director
	KKR FUND HOLDINGS GP LIMITED
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director
	KKR GROUP HOLDINGS L.P.
By:	KKR Group Limited, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director
	KKR GROUP LIMITED
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Director

	KKR & CO. L.P.
By:	KKR Management LLC, its general partner
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Designated Member
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Designated Member
	KKR MANAGEMENT LLC
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for Henry R. Kravis, Designated Member
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact for George R. Roberts, Designated Member
	HENRY R. KRAVIS
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact
	GEORGE R. ROBERTS
By:	/s/ William J. Janetschek
	Name: William J. Janetschek Title: Attorney-in-fact