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