Established in 1983, CAPH is a statewide trade association representing 19 public and not-for profit hospitals, academic medical centers and comprehensive health care systems working on the front lines of health care in California.

The National Public Health and Hospital Institute is a private, nonprofit organization established in 1988 to address the major issues facing public hospitals, safety net organizations, underserved communities, and related health policy issues of national priority. Its membership includes the healthcare organizations that comprise the NAPH. The NPHHI board includes public and nonprofit sector leaders in health policy and service delivery.

Eyman Associates, headed by longtime NAPH counsel Barbara Eyman, provides legal and policy services to NAPH. The attorneys at Eyman Associates have a deep history of representing NAPH and public and safety net hospitals on federal and state Medicaid, Medicare, CHIP and health reform issues, as well as other legal and policy matters, including reimbursement, delivery system reform, Affordable Care Act opportunities and challenges, governance, academic affiliations, regulatory compliance and enforcement. Barbara Eyman also serves as NAPH's General Counsel, and Sarah Mutinsky as NAPH's Deputy General Counsel.

Safety Net Hospitals for Pharmaceutical Access (SNHPA) is an organization of more than 700 public and private non-profit hospitals and health systems throughout the U.S. that participate in the Public Health Service 340B drug discount program. SNHPA, which was originally named the Public Hospital Pharmacy Coalition, was formed in 1993 to increase the affordability and accessibility of pharmaceutical care for the nation's poor and underserved populations.

The University HealthSystem Consortium (UHC) is an alliance of 103 academic medical centers and 212 of their affiliated hospitals representing approximately 90% of the nation's non-profit academic medical centers.