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