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