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