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