Partnership HealthPlan of California is authorized by the State of California to provide health care services for Medi-Cal managed care beneficiaries in 24 Northern California counties.^[6]

• Medi-Cal. California’s version of Medicaid is the only public program that covers many low-income adults and children.

Other coverage programs have been included in the past:^[7]

• 2002-2005 County Medical Services Program (CMSP) program (Solano and Napa counties).
• 2007-2014 PartnershipAdvantage, a Special Needs Plan Medicare Advantage program (Yolo, Napa, Solano counties only)
• 2010-2013 Healthy Families, the California version of the federal Children's Health Insurance Program (Napa, Sonoma, Solano, Yolo counties only). In 2013, the Healthy Families Program was folded into Medi-Cal as part of the Affordable Care Act.
• 2005-2016 Healthy Kids. Partnership HealthPlan also offered a health insurance product called Healthy Kids to low income children not otherwise eligible for Medi-Cal.^[8] In 2016, the Healthy Kids Program was folded into Medi-Cal under California's SB 75, passed in 2015. ^[9]

In 1993, the State Department of Health Services produced a report entitled “Expanding Medi-Cal Managed Care: Reforming the Health System – Protecting Vulnerable Populations” which served as a blueprint for expansion of Medi-Cal managed care.^[10]

The Solano Health Partnership, the predecessor of Partnership HealthPlan, began serving Medi-Cal beneficiaries in Solano County in 1994 as a County Organized Health System. The Solano Coalition for Better Health, a community stakeholder group, founded Partnership HealthPlan.^[11] The Coalition began discussing overall health of the Solano County community in 1988 culminating in a contract with the State of California in 1992, beginning operations in 1994.^[12]

In 1998, the Solano Health Partnership expanded into Napa County, and changed its name to Partnership HealthPlan of California. Further geographic expansions are listed^[13]

• 2001 Expansion to Yolo County
• 2009 Expansion to Sonoma County^[14]
• 2011 Expansion to Marin and Mendocino Counties^[15]
• 2013 Expansion to Del Norte, Humboldt, Lake, Lassen, Modoc, Shasta, Siskiyou, and Trinity counties^[16]
• 2024 Expansion to Butte, Colusa, Glenn, Nevada, Placer, Plumas, Sierra, Sutter, Tehama, and Yuba counties^[6]

The founding Chief Executive Officer was Jack Horn, who retired in 2015.^[17]

• Managing Pain Safely, reducing opioid overuse.^{[18][19][20][21][22][23] [24][25]}
• Offering and Honoring Choices, promoting advance care planning and palliative care.^{[26][27][28][29]}
• Telehealth^[30][31][32]
• EConsult^[33]
• Social determinants of health^[34]
• Wellness and Recovery Program (Substance use disorder services for seven counties) Launched 2020. ^[35]

Partnership HealthPlan is governed by a board of commissions composed of up to 37 members representing all 24 counties, including physicians, county officials, hospital leaders, providers, PHC health plan members, and public representatives.^[36]

• Health care
• L.A. Care Health Plan
• Association for Community Affiliated Plans

• Partnership Healthplan of California