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