skip to content, health centers and clinics, search, accessibility statement

About Us


Often called the "best kept secret of Contra Costa County", Contra Costa Health Plan (CCHP) has been serving the health needs for people in the County for 40 years. CCHP was the first federally qualified, state licensed, county sponsored HMO in the United States. In 1973, we became the first county sponsored health plan in California to offer Medi-cal Managed Care coverage and in 1976, we became the first county run HMO to serve Medicare beneficiaries. In the 1980's, we expanded our programs to reach out to county employees, businesses, individuals and families. In 2014 as part of the implementation of the Affordable Care Act, CCHP enrolled over 35,000 newly eligible individuals into Medi-Cal Managed Care and in 2015 over 25,000 more individuals enrolled into CCHP Medi-Cal Managed Care.

Brochure: Celebrating 40 years of Care

Divisions of Service for CCHP

  • Provider Affairs
  • Member Services
  • Managed Care Commission
  • Marketing & Communications
  • Quality Management
  • Utilization Management
  • Telephone Advice Nurse Unit
  • Cooperative Care Management Unit
  • Pharmacy Prior Authorizations
  • Business Office - Claims Unit

The Department of Managed Health Care's HMO Help Center can help you resolve problems that you are having with your health plan, including issues about medical care, prescriptions, preventive testing and mental health services. We will also help you with questions regarding the complaint process and your health care rights.


Chief Executive Officer: Sharron Mackey
Contra Costa Health Plan
595 Center Avenue, Suite 100
Martinez, California 94553 [Directions]
925-313-6002 fax

Contact Us