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