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