- Russellville Hospital
- Ruston Regional Specialty Hospital
- Rutgers University Behavioral Health Care
- Rutherford Regional Medical Center
- Rutland Regional Medical Center
- RWJBarnabas Health Behavioral Health Center
- RWJ University Hospital Hamilton
- RWJ University Hospital Rahway
- RWJ University Hospital Somerset
- Ryder Memorial Hospital
- Sabetha Community Hospital
- Sabine County Hospital
- Sabine Medical Center
- Sacramento Behavioral Healthcare Hospital
- Sacramento Medical Center
- Sacramento Rehabilitation Hospital
- Saddleback Medical Center
- Sagamore Childrens Psychiatric Center
- Sage Memorial Hospital
- Sage Rehabilitation Hospital
- Sage Specialty and Rehabilitation Center of Lafayette
- Sage Specialty Hospital - Baton Rouge
- Sage Specialty Hospital - Denham Springs
- SageWest - Lander
- SageWest - Riverton
- Saint Agnes Medical Center
- Saint Alphonsus Medical Center - Baker City
- Saint Alphonsus Medical Center - Nampa
- Saint Alphonsus Medical Center - Ontario
- Saint Alphonsus Regional Medical Center