| Saint Joseph Hospital-Elgin | Elgin, IL | Acute Care Hospitals | Voluntary non-profit - Church | 4 stars |
| Saint Joseph Medical Center | Joliet, IL | Acute Care Hospitals | Voluntary non-profit - Church | 1 star |
| Salem Township Hospital | Salem, IL | Critical Access Hospitals | Government - Local | 4 stars |
| Sarah Bush Lincoln Health Center | Mattoon, IL | Acute Care Hospitals | Voluntary non-profit - Private | 3 stars |
| Sarah D Culbertson Memorial Hospital | Rushville, IL | Critical Access Hospitals | Government - Hospital District or Authority | Not rated |
| Shriners Hospital for Children | Chicago, IL | Childrens | Voluntary non-profit - Private | Not rated |
| Silver Cross Hospital and Medical Centers | New Lenox, IL | Acute Care Hospitals | Voluntary non-profit - Private | 5 stars |
| Silver Oaks Behavioral Hospital | New Lenox, IL | Psychiatric | Proprietary | Not rated |
| South Shore Hospital | Chicago, IL | Acute Care Hospitals | Voluntary non-profit - Private | Not rated |
| Sparta Community Hospital | Sparta, IL | Critical Access Hospitals | Government - Hospital District or Authority | 3 stars |
| SSM Health St Mary's Hospital -Centralia | Centralia, IL | Acute Care Hospitals | Voluntary non-profit - Church | 3 stars |
| St Alexius Medical Center | Hoffman Estates, IL | Acute Care Hospitals | Voluntary non-profit - Church | 5 stars |
| St Anthonys Memorial Hospital | Effingham, IL | Acute Care Hospitals | Voluntary non-profit - Church | 3 stars |
| St Bernard Hospital | Chicago, IL | Acute Care Hospitals | Voluntary non-profit - Church | 1 star |
| St Francis Hospital | Litchfield, IL | Critical Access Hospitals | Voluntary non-profit - Church | 2 stars |
| St Johns Hospital | Springfield, IL | Acute Care Hospitals | Voluntary non-profit - Church | 2 stars |
| St Joseph Medical Center | Bloomington, IL | Acute Care Hospitals | Voluntary non-profit - Church | 2 stars |
| St Joseph Memorial Hospital | Murphysboro, IL | Critical Access Hospitals | Voluntary non-profit - Private | Not rated |
| St Joseph's Hospital | Highland, IL | Critical Access Hospitals | Voluntary non-profit - Church | 3 stars |
| St Josephs Hospital | Breese, IL | Acute Care Hospitals | Voluntary non-profit - Church | 4 stars |
| St Mary Medical Center | Galesburg, IL | Acute Care Hospitals | Voluntary non-profit - Church | 2 stars |
| St Marys Hospital | Decatur, IL | Acute Care Hospitals | Voluntary non-profit - Private | 1 star |
| Swedish Hospital | Chicago, IL | Acute Care Hospitals | Voluntary non-profit - Church | 3 stars |
| Taylorville Memorial Hospital | Taylorville, IL | Critical Access Hospitals | Voluntary non-profit - Private | 2 stars |
| The Pavilion | Champaign, IL | Psychiatric | Voluntary non-profit - Private | Not rated |
| The University of Chicago Medical Center | Chicago, IL | Acute Care Hospitals | Voluntary non-profit - Private | 4 stars |
| Thomas H Boyd Memorial Hospital | Carrollton, IL | Critical Access Hospitals | Government - Local | Not rated |
| Thorek Memorial Hospital | Chicago, IL | Acute Care Hospitals | Voluntary non-profit - Private | Not rated |
| Touchette Regional Hospital Inc | Centreville, IL | Acute Care Hospitals | Voluntary non-profit - Private | Not rated |
| Trinity Rock Island | Rock Island, IL | Acute Care Hospitals | Voluntary non-profit - Private | 3 stars |
| Uchicago Medicine Adventhealth Bolingbrook | Bolingbrook, IL | Acute Care Hospitals | Voluntary non-profit - Private | 3 stars |
| Uchicago Medicine Adventhealth Glenoaks | Glendale Heights, IL | Acute Care Hospitals | Voluntary non-profit - Other | 3 stars |
| Uchicago Medicine Adventhealth Hinsdale | Hinsdale, IL | Acute Care Hospitals | Voluntary non-profit - Private | 5 stars |
| Uchicago Medicine Adventhealth la Grange | La Grange, IL | Acute Care Hospitals | Voluntary non-profit - Church | 5 stars |
| University of Illinois Hospital and Clinics | Chicago, IL | Acute Care Hospitals | Government - State | 4 stars |
| UW Health | Rockford, IL | Acute Care Hospitals | Voluntary non-profit - Private | 3 stars |
| VA Illiana Healthcare System - Danville | Danville, IL | Acute Care - Veterans Administration | Veterans Health Administration | Not rated |
| Valley West Community Hospital | Sandwich, IL | Critical Access Hospitals | Voluntary non-profit - Private | 4 stars |
| Vista Medical Center East | Waukegan, IL | Acute Care Hospitals | Proprietary | 2 stars |
| Wabash General Hospital 1 | Mount Carmel, IL | Critical Access Hospitals | Government - Hospital District or Authority | Not rated |
| Warner Hospital and Health Services | Clinton, IL | Critical Access Hospitals | Government - Local | Not rated |
| Washington County Hospital | Nashville, IL | Critical Access Hospitals | Government - Hospital District or Authority | Not rated |
| West Suburban Medical Center | Oak Park, IL | Acute Care Hospitals | Voluntary non-profit - Other | 1 star |