| Southern California Emergency Medical Group | St. Mary Medical Center | Long Beach | |
| Saint John's Emergency Medicine Specialists | St. John's Health Center | Santa Monica | |
| Pacific Emergency Physicians | Scripps Mercy Hospital | San Diego | |
| South Coast Emergency Medical Group | Santa Barbara Cottage Hospital | Santa Barbara | |
| Napa Valley Emergency Medical Group | Queen of the Valley Medical Center | Napa | |
| Placentia Linda Emergency Physicians | Placentia Linda Hospital | Placentia | |
| Riverside Emergency Physicians Medical Group | Parkview Community Hospital MC | | |
| Riverside Emergency Physicians Medical Group | Parkview Community Hospital | Riverside | |
| Mills Peninsula Emergency Medical Assoc., Inc. | Mills-Peninsula Medical Center | Burlingame | |
| Newport Emergency Medical Group | Hoag Memorial Hospital Presbyterian | Newport Beach | |
| Pinnacle Emergency Physicians at Bakersfield | Bakersfield Memorial Hospitals | | |
| Pinnacle Emergency Physicians of Bakersfield | Bakersfield Memorial Hospital | | |
| Antelope Valley Emergency Medicine Associates | Antelope Valley Hospital | Lancaster | |
| Berkeley Emergency Medical Group | Alta Bates Medical Center | San Ramon | |
| Central Coast Emergency Physicians | | | |
| Chula Vista Emergency Room Physicians | | | |
| Culver Emergency Medical Ggroup | | | |
| Eastern Sierra Emergency Physicians | | | |
| Emergency Specialist Physicians Med Assoc | | | |
| Intercommunity Emergency Medical Group | | | |
| Monterey Bay Emergency Physicians Medical Corporation | | | |