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