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