- Saint Lukes Hospital of Duluth
- Saint Lukes University Health Network (SLUHN)
- Salem Health
- Salina Regional Health Center
- Salinas Valley Memorial Healthcare System
- Samaritan Health Services
- Samaritan Health System
- San Antonio Regional Hospital
- Sanford Health
- San Francisco Health Network
- San Juan Regional Medical Center
- San Luis Valley Health
- Santa Clara Valley Health and Hospital System
- Sarah Bush Lincoln Health System
- Sarasota Memorial Health Care System
- SBH Health System
- SCA Health
- Schneck Medical Center
- ScionHealth
- Scripps Health
- Seaside Healthcare
- Seattle Childrens Hospital Research and Foundation
- Select Specialty Hospitals
- Self Regional Healthcare
- Sentara Healthcare
- SentryCare
- Shannon Health
- Sharp Healthcare
- Sheppard Pratt Health System
- ShorePoint Health