| Meridian Clinical Research, LLC | Meridian Clinical Research, LLC |
| Optimal Research | Optimal Research |
| Shady Grove Adventist Hospital | Shady Grove Adventist Hospital |
| Endocrine and Metabolic Consultants | Endocrine and Metabolic Consultants |
| DermAssociates, PC | DermAssociates, PC |
| Lawrence J. Green, MD LLC | Lawrence J. Green, MD LLC |
| Lawrence Green, MD, LLC | Lawrence Green, MD, LLC |
| Capital Clinical Research Associates | Capital Clinical Research Associates |
| Shady Grove Fertility Reproductive Science Center | Shady Grove Fertility Reproductive Science Center |
| Kaiser Permanente - Shady Grove Medical Center | Kaiser Permanente - Shady Grove Medical Center |
| Maryland Oncology Hematology PA-Aquilino Cancer Center | Maryland Oncology Hematology PA-Aquilino Cancer Center |
| Biolab Research LLC | Biolab Research LLC |
| Sport and Spine Rehab | Sport and Spine Rehab |
| Westat, Inc. | Westat, Inc. |
| Rockville Internal Medicine Group | Rockville Internal Medicine Group |
| George Washington University Biostatistics Center | George Washington University Biostatistics Center |
| Accelovance | Accelovance |
| Sport & Spine Rehab | Sport & Spine Rehab |
| AIDS - Associated Malignancies Clinical Trials Consortium | AIDS - Associated Malignancies Clinical Trials Consortium |
| Mid Atlantic Clinical Research | Mid Atlantic Clinical Research |
| Kaiser Permanente | Kaiser Permanente |
| Cancer Trials Support Unit | Cancer Trials Support Unit |
| TLC Laser Eye Center | TLC Laser Eye Center |
| Dermatology, Cosmetic & Laser Surgery | Dermatology, Cosmetic & Laser Surgery |
| Victory Over Cancer | Victory Over Cancer |
| The Orthopaedic Center | The Orthopaedic Center |
| Capital Digestive Care | Capital Digestive Care |
| Cardiac Associates PC | Cardiac Associates PC |
| DuPont Clinical Research, Inc. | DuPont Clinical Research, Inc. |
| Associates in Oncology and Hematology - Medical Center Drive | Associates in Oncology and Hematology - Medical Center Drive |
| Maryland Perinatal Associates | Maryland Perinatal Associates |
| Center for Neuroscience and Regenerative Medicine (CNRM) | Center for Neuroscience and Regenerative Medicine (CNRM) |
| All Natural Medicine Clinic, LLC | All Natural Medicine Clinic, LLC |
| Adventist Healthcare Rehabilitation | Adventist Healthcare Rehabilitation |
| Maryland Diabetes & Endocrine Associates | Maryland Diabetes & Endocrine Associates |