1) AdvaMed

2) Altria Client Services

3) Anthem, Inc.

4) Ardent Health Services

5) Atrium Health

6) Baxter HealthCare Corporation

7) CareDx, Inc.

8) Centene Corporation

9) Emergency Nurses Association

10) Envision Healthcare

11) Freewill Networks

12) Insperity Services, L.P.

13) International Hearing Society

14) LifePoint Health (f.r.a RCCH HealthCare Partners)

15) Marriott International, Inc.

16) National Mentor Holdings, Inc.

17) NMAC (on behalf of the HIV/STD Partnership)

18) One Call Corporation

19) TENET HEALTHCARE CORP

20) Textile Rental Services Association

21) Valley Children's Healthcare

22) Visionary Integration Professionals