| Children's Hospital of Orange County | Children's Hospital of Orange County |
| University of California - Irvine Medical Center | University of California - Irvine Medical Center |
| UC Irvine Health/Chao Family Comprehensive Cancer Center | UC Irvine Health/Chao Family Comprehensive Cancer Center |
| Saint Joseph Hospital - Orange | Saint Joseph Hospital - Orange |
| NRC Research Institute | NRC Research Institute |
| Chao Family Comprehensive Cancer Center at University of California Irvine Cancer Center | Chao Family Comprehensive Cancer Center at University of California Irvine Cancer Center |
| St. Joseph Hospital Regional Cancer Center - Orange | St. Joseph Hospital Regional Cancer Center - Orange |
| Medical Oncology Care Associates | Medical Oncology Care Associates |
| Pacific Clinical Research Medical Group | Pacific Clinical Research Medical Group |
| Orthopaedic Specialty Institute | Orthopaedic Specialty Institute |
| University of California Irvine - ALS & Neuromuscular Center | University of California Irvine - ALS & Neuromuscular Center |
| Coastal Vision | Coastal Vision |
| Diabetes Associates Medical Group | Diabetes Associates Medical Group |
| CHOC PSF, AMC, Division of Allergy, Asthma & Immunology | CHOC PSF, AMC, Division of Allergy, Asthma & Immunology |
| Orange County Heart Institute | Orange County Heart Institute |
| HOAG Orthopedics | HOAG Orthopedics |
| Univ of California Irvine College of Medicine | Univ of California Irvine College of Medicine |
| Clinnova Research | Clinnova Research |
| UCI Women's Healthcare | UCI Women's Healthcare |
| Choc Psf, Amc | Choc Psf, Amc |
| Knowledge Research Center | Knowledge Research Center |
| Clinical Trials of Orange County | Clinical Trials of Orange County |
| UCI Center for Clinical Research | UCI Center for Clinical Research |
| University of California Irvine Medical Center - Infectious Disease | University of California Irvine Medical Center - Infectious Disease |
| Center for Inherited Blood Disorders | Center for Inherited Blood Disorders |
| Orange County Neuro Phychiatry Research Centre | Orange County Neuro Phychiatry Research Centre |
| UC Irvine Women's Healthcare | UC Irvine Women's Healthcare |
| University of California Irvine Department of Neurology | University of California Irvine Department of Neurology |
| St. Joseph Hospital of Orange Heart and Vascular Center | St. Joseph Hospital of Orange Heart and Vascular Center |
| Breastlink Medical Group, Inc. | Breastlink Medical Group, Inc. |
| H. H. Chao Comprehensive Digestive Disease Center | H. H. Chao Comprehensive Digestive Disease Center |
| Orthopaedic Education and Research Institute of Southern California | Orthopaedic Education and Research Institute of Southern California |
| University of California at Irvine Medical Center; Department of Oncology | University of California at Irvine Medical Center; Department of Oncology |
| Pulmonary Consultants & Primary Care Physicians Medical Group, Inc. | Pulmonary Consultants & Primary Care Physicians Medical Group, Inc. |
| Restore Orthopedics and Spine Center | Restore Orthopedics and Spine Center |
| Coronavirus Research Institute | Coronavirus Research Institute |
| UCI Medical Center, University of California, Irvine | UCI Medical Center, University of California, Irvine |
| AGMG Clinical Research | AGMG Clinical Research |
| University of California, Irvine Medical Center ENT Clinic (Pavilion 2) | University of California, Irvine Medical Center ENT Clinic (Pavilion 2) |
| UCI Medical Center- Outpatient Pharmacy | UCI Medical Center- Outpatient Pharmacy |
| Chapman University | Chapman University |
| Children's Hospital of Orange County ( Site 2502) | Children's Hospital of Orange County ( Site 2502) |
| Satellite Healthcare Orange | Satellite Healthcare Orange |
| Saint Joseph Hospital | Saint Joseph Hospital |
| Vascular and Interventional Specialists of Orange County | Vascular and Interventional Specialists of Orange County |
| Conquest Clinical Research | Conquest Clinical Research |
| University of California, Irvine, Medical Center - Prenatal care clinics and private practice | University of California, Irvine, Medical Center - Prenatal care clinics and private practice |
| St. Joseph Heritage Medical Group | St. Joseph Heritage Medical Group |