| Brown & Toland Physicians |
| California Pacific Medical Center - Pacific Campus |
| CHF QUERI |
| Desert Regional Medical Center |
| Doctors Hospital of Manteca, Inc |
| Doctors Medical Center |
| Fountain Valley Regional Hospital and Medical Center, Inc. |
| Good Samaritan Hospital |
| Hoag Memorial Hospital Presbyterian |
| Huntington Memorial Hospital |
| John Muir Medical Center - Concord Campus |
| John Muir Medical Center-Walnut Creek Campus |
| Kaiser Foundation Hospital-Baldwin Park Medical Center |
| Kaiser Foundation Hospitals - Los Angeles Medical Center |
| Long Beach Memorial Medical Center |
| Los Alamitos Medical Center |
| Lumetra Healthcare Solutions |
| Memorial Medical Center |
| Mercy General Hospital |
| Mills-Peninsula Health Services |
| Mission Hospital |
| Naval Medical Center San Diego |
| Pathways Home Health and Hospice |
| Placentia-Linda Hospital |
| Providence Health System - Southern California |
| Providence Holy Cross Medical Center |
| Providence Saint Joseph Medical Center |
| Providence Tarzana Medical Center |
| Queen of the Valley Medical Center |
| Regional Medical Center of San Jose |
| Rideout Memorial Hospital |
| San Francisco VA Medical Center |
| San Ramon Regional Medical Center |
| Scripps Memorial Hospital La Jolla |
| Sequoia Hospital |
| Sierra Vista Regional Medical Center |
| St Mary Medical Center |
| St. Bernadines Medical Center |
| St. Joseph Hospital (Eureka, CA) |
| St. Joseph Hospital (Orange, CA) |
| St. Joseph's Medical Center of Stockton |
| St. Jude Medical Center |
| St. Luke's Hospital |
| Sutter Health |
| Sutter Medical Center, Sacramento |
| Sutter VNA and Hospice |
| Tenet California/Nebraska |
| Torrance Memorial Medical Center |
| Twin Cities Community Hospital |
| University of California Irvine Medical Center |
| VA Loma Linda Healthcare System |