- Stonebridge Behavioral Health
- Stone County Medical Center
- StoneCrest Center
- Stones Crossing Health Pavilion
- StoneSprings Hospital Center
- Stonewall Jackson Memorial Hospital
- Stonewall Memorial Hospital
- Stonington Institute
- Stony Brook Childrens
- Stony Brook Eastern Long Island Hospital
- 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