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