Health Plan of San Joaquin (HPSJ) is a publicly sponsored, not-for-profit, managed care health plan designed by and for the people of San Joaquin County. Licensed as a Health Maintenance Organization under the State of California Knox-Keene Act, HPSJ contracts with the State Department of Health Services (DHS) for care of persons on Medi-Cal in San Joaquin County, as well as the Healthy Families Program regulated by the California Managed Risk Medical Insurance Board (MRMIB).