Mission: To help our members, and the communities we serve, be healthy Vision: To be the most highly regarded managed care plan in California About Us: Partnership HealthPlan of California is a non-profit community-based health care organization. Partnership contracts with the state to administer Medi-Cal benefits through local providers to ensure our members have access to high-quality health care. Beginning in Solano County in 1994, Partnership now provides services in 24 Northern California counties: Butte, Colusa, Del Norte. Glenn, Humboldt, Lake, Lassen, ​Marin, ​Mendocino, ​Modoc, ​Napa, ​Nevada, ​Placer, ​Plumas, Shasta, ​Sierra, ​Siskiyou, Solano, ​Sonoma, ​Sutter, Tehama, ​Trinity, ​Yolo, ​and Yuba. Please click here to learn more about PHC.