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