- Stony Brook Southampton Hospital
- Stony Brook University Hospital
- Stormont Vail Health - Flint Hills Campus
- Stormont Vail Hospital
- Story County Medical Center
- Stoughton Health
- St Peters Health Regional Medical Center
- St Peters Hospital
- Straith Hospital for Special Surgery
- Straub Medical Center
- Streamwood Behavioral Healthcare System Hospital
- Stringfellow Memorial Hospital
- Strong Memorial Hospital
- St Rose Hospital
- St Tammany Health System
- St Thomas More Hospital
- Sturdy Health
- Sturgis Hospital
- St Veronica Behavioral Health Hospital
- St Vincent Fishers
- St Vincent General Hospital District
- St Vincent Heart Center of Indiana
- St Vincent Regional Hospital
- St Vincents Behavioral Health Westport
- St Vincents Hospital Westchester
- St Vincents Medical Center
- Suburban Community Hospital
- Suburban Hospital
- Sullivan County Community Hospital
- Sullivan County Memorial Hospital