Health Plan of San Joaquin/Mountain Valley Health Plan (not-for-profit health plan) is the leading Medi-Cal managed care provider in San Joaquin in Stanislaus Counties, now serving Medi-Cal members in Alpine in El Dorado Counties. Located in the heart of California’s multicultural Central Valley, Health Plan offers a broad network of providers and works closely with physicians to develop programs and services to ensure quality health care for over 450,000 members. NCQA Accreditation: The National Committee for Quality Assurance (NCQA) has awarded HPSJ a Three-Year Accreditation for Medicaid HMO for our Medi-Cal line of business. In California, Medicaid is known as Medi-Cal.