| 1199SEIU in Marin County, CA | AMERIGROUP in Marin County, CA |
| APS Healthcare in Marin County, CA | Aetna in Marin County, CA |
| Alliance in Marin County, CA | AmeriHealth in Marin County, CA |
| American Behavioral in Marin County, CA | Beech Street in Marin County, CA |
| Behavioral Health Systems in Marin County, CA | BlueCross and/or BlueShield in Marin County, CA |
| CCN in Marin County, CA | CHIPA/College Health in Marin County, CA |
| Cascade Health in Marin County, CA | Ceridian in Marin County, CA |
| ChoiceCare in Marin County, CA | Cigna in Marin County, CA |
| ComPsych in Marin County, CA | Corphealth in Marin County, CA |
| Coventry in Marin County, CA | First Choice Health in Marin County, CA |
| First Health in Marin County, CA | GHI/Group Health Incorporated in Marin County, CA |
| Great-West in Marin County, CA | Guardian in Marin County, CA |
| HFN in Marin County, CA | HIP/Health Plan of New York in Marin County, CA |
| Harvard Pilgrim Health Care in Marin County, CA | Health Net in Marin County, CA |
| Holman Group in Marin County, CA | Horizon Healthcare in Marin County, CA |
| Humana in Marin County, CA | Integrated Health Plan in Marin County, CA |
| Interplan in Marin County, CA | Kaiser in Marin County, CA |
| LifeWise in Marin County, CA | MAMSI in Marin County, CA |
| MHN/Managed Health Network in Marin County, CA | Magellan Behavioral Health in Marin County, CA |
| MagnaCare in Marin County, CA | Medica in Marin County, CA |
| Medicaid in Marin County, CA | Medical Mutual in Marin County, CA |
| Medicare in Marin County, CA | Multiplan in Marin County, CA |
| NCPPO in Marin County, CA | ODS in Marin County, CA |
| Oxford in Marin County, CA | PHCS/Private Health Care Systems in Marin County, CA |
| PPOM in Marin County, CA | PacifiCare in Marin County, CA |
| PacificSource in Marin County, CA | PreferredOne in Marin County, CA |
| Providence in Marin County, CA | Sloans Lake in Marin County, CA |
| TRICARE in Marin County, CA | TriWest0127 in Marin County, CA |
| Tufts in Marin County, CA | UniCare in Marin County, CA |
| Uniform in Marin County, CA | United in Marin County, CA |
| VMC in Marin County, CA | ValueOptions in Marin County, CA |
| WellPoint in Marin County, CA |