- Saint Annes Hospital
- Saint Vincent Hospital
- Salem Hospital
- Shriners Childrens - Boston
- Shriners Childrens - New England
- Signature Healthcare Brockton Hospital
- Southcoast Behavioral Health
- South Shore Hospital
- Spaulding Hospital for Continuing Medical Care Cambridge
- Spaulding Rehabilitation Hospital Boston
- Spaulding Rehabilitation Hospital Cape Cod
- St Elizabeths Medical Center
- St Lukes Hospital
- Sturdy Health