| Antelope Valley Emergency Medicine Associates | Antelope Valley Hospital | Lancaster | |
| Berkeley Emergency Medical Group | Alta Bates Medical Center | San Ramon | |
| Chula Vista Emergency Room Physicians | Scripps Mercy Hospital Chula Vista | Chula Vista | |
| Emergency Physicians of Orange County | Hoag Memorial Hospital Presbyterian | Newport Beach | |
| Emergency Specialist Physicians Med Assoc | Little Company of Mary - Torrance | Torrance | |
| Intercommunity Emergency Medical Group | Presbyterian Intercommunity Hospital | Whittier | |
| Mills Peninsula Emergency Medical Assoc., Inc. | Mills-Peninsula Medical Center | Burlingame | |
| Monterey Bay Emergency Partners | Community Hospital of the Monterey Peninsula | Monterey | |
| Napa Valley Emergency Medical Group | Queen of the Valley Medical Center | Napa | |
| Pacific Emergency Physicians | Scripps Mercy Hospital | San Diego | |
| Riverside Emergency Physicians Medical Group | Parkview Community Hospital | Riverside | |
| Riverside Emergency Physicians Medical Group | Parkview Community Hospital MC | | |
| South Coast Emergency Medical Group | Santa Barbara Cottage Hospital | Santa Barbara | |
| Southern California Emergency Medical Group | Providence Little Company of Mary San Pedro Medical Center | San Pedro | |