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