| Shriners Hospital for Children - Portland | Portland, OR | Childrens | Not rated |
| Shriners Hospitals for Children | Saint Louis, MO | Childrens | Not rated |
| Shriners Hospitals for Children | Dayton, OH | Childrens | Not rated |
| Shriners Hospitals for Children | Greenville, SC | Childrens | Not rated |
| Shriners Hospitals for Children | Galveston, TX | Childrens | Not rated |
| Shriners Hospitals for Children Northern Calif | Sacramento, CA | Childrens | Not rated |
| Sidney Health Center | Sidney, MT | Critical Access Hospitals | 3 stars |
| Sidney Regional Medical Center | Sidney, NE | Critical Access Hospitals | Not rated |
| Sierra View Medical Center | Porterville, CA | Acute Care Hospitals | 3 stars |
| Silver Cross Hospital and Medical Centers | New Lenox, IL | Acute Care Hospitals | 5 stars |
| Simpson General Hospital CAH | Mendenhall, MS | Critical Access Hospitals | 2 stars |
| Sinai Hospital of Baltimore | Baltimore, MD | Acute Care Hospitals | 3 stars |
| Sioux Center Health | Sioux Center, IA | Critical Access Hospitals | Not rated |
| Sisters of Charity Hospital | Buffalo, NY | Acute Care Hospitals | 3 stars |
| Sky Lakes Medical Center | Klamath Falls, OR | Acute Care Hospitals | 2 stars |
| Slhs Massena, Inc | Massena, NY | Critical Access Hospitals | Not rated |
| Smp Health St Aloisius | Harvey, ND | Critical Access Hospitals | 1 star |
| Smyth County Community Hospital | Marion, VA | Acute Care Hospitals | 3 stars |
| Socorro General Hospital | Socorro, NM | Critical Access Hospitals | Not rated |
| Soin Medical Center | Beaver Creek, OH | Acute Care Hospitals | 4 stars |
| Sojourn at Seneca Senior Behavioral Health Hospita | Tiffin, OH | Psychiatric | Not rated |
| Soldiers and Sailors Memorial Hospital of Yates | Penn Yan, NY | Critical Access Hospitals | Not rated |
| South County Hospital Inc | Wakefield, RI | Acute Care Hospitals | 4 stars |
| South Florida Baptist Hospital | Plant City, FL | Acute Care Hospitals | 3 stars |
| South Lyon Medical Center | Yerington, NV | Critical Access Hospitals | Not rated |
| South Miami Hospital | Miami, FL | Acute Care Hospitals | 4 stars |
| South Oaks Hosp | Amityville, NY | Psychiatric | Not rated |
| South Peninsula Hospital | Homer, AK | Critical Access Hospitals | Not rated |
| South Shore Hospital | Chicago, IL | Acute Care Hospitals | Not rated |
| South Shore Hospital | South Weymouth, MA | Acute Care Hospitals | 2 stars |
| Southcoast Hospitals Group | Fall River, MA | Acute Care Hospitals | 4 stars |
| Southeast Iowa Regional Medical Center | West Burlington, IA | Acute Care Hospitals | 4 stars |
| Southeast Michigan Surgical Hospital LLC | Warren, MI | Acute Care Hospitals | Not rated |
| Southeastern Ohio Regional Medical Center | Cambridge, OH | Acute Care Hospitals | 4 stars |
| Southeastern Regional Medical Center | Lumberton, NC | Acute Care Hospitals | 2 stars |
| Southern NH Medical Center | Nashua, NH | Acute Care Hospitals | 2 stars |
| Southern Ocean Medical Center | Manahawkin, NJ | Acute Care Hospitals | 4 stars |
| Southern Regional Medical Center | Riverdale, GA | Acute Care Hospitals | 1 star |
| Southside Community Hospital, Inc | Farmville, VA | Acute Care Hospitals | 4 stars |
| Southwest General Health Center | Middleburg Heights, OH | Acute Care Hospitals | 4 stars |
| Southwest Health Center | Platteville, WI | Critical Access Hospitals | Not rated |
| Southwest Healthcare Services | Bowman, ND | Critical Access Hospitals | Not rated |
| Southwest Memorial Hospital | Cortez, CO | Critical Access Hospitals | 4 stars |
| Southwestern Vermont Medical Center | Bennington, VT | Acute Care Hospitals | 3 stars |
| Sparrow Ionia Hospital | Ionia, MI | Critical Access Hospitals | 2 stars |
| Speare Memorial Hospital | Plymouth, NH | Critical Access Hospitals | 3 stars |
| Spectrum Health | Grand Rapids, MI | Acute Care Hospitals | 4 stars |
| Spooner Health System | Spooner, WI | Critical Access Hospitals | 5 stars |
| Springbrook Hospital | Brooksville, FL | Psychiatric | Not rated |
| Springfield Hospital | Springfield, VT | Critical Access Hospitals | Not rated |