| Kaiser Permanente-Walnut Creek | Kaiser Permanente-Walnut Creek |
| Diablo Clinical Research | Diablo Clinical Research |
| John Muir Medical Center-Walnut Creek | John Muir Medical Center-Walnut Creek |
| Epic Care Cyberknife Center | Epic Care Cyberknife Center |
| Bay Area Retina Associates | Bay Area Retina Associates |
| Allergy and Asthma Clinical Research Inc | Allergy and Asthma Clinical Research Inc |
| John Muir/Mt. Diablo Comprehensive Cancer Center | John Muir/Mt. Diablo Comprehensive Cancer Center |
| Care Access Research-Walnut Creek | Care Access Research-Walnut Creek |
| Allergy & Asthma Medical Group of Diablo Valley, Inc. | Allergy & Asthma Medical Group of Diablo Valley, Inc. |
| Clinical Research of California | Clinical Research of California |
| Radiation Oncology Center - Walnut Creek | Radiation Oncology Center - Walnut Creek |
| IPM Medical Group, Inc. | IPM Medical Group, Inc. |
| Cardiovascular Consultants Medical Group | Cardiovascular Consultants Medical Group |
| IPM Medical Group | IPM Medical Group |
| Contra Costa Oncology | Contra Costa Oncology |
| University of California, Davis | University of California, Davis |
| Infect Disease Doctors Med Grp | Infect Disease Doctors Med Grp |
