| Arlington Heights | Northwest Community Healthcare | | | |
| Aurora | Mercy Medical Center | Des Plaines | Holy Family Medical Center |
| Aurora | Rush Copley Medical Center | Downers Grove | Advocate Good Samaritan Hospital |
| Barrington | Advocate Good Shepherd Hospital | Kankakee | St Mary’s Hospital |
| Berwyn | Macneal Hospital (Loyola) | Elgin | Advocate Sherman Hospital |
| Bolingbrook | Adventist Bolingbrook | Elgin | St Joseph Hospital |
| | Elk Grove Village | Ascension Alexian Brothers |
| | Elmhurst | Edward‑Elmhurst Health |
| Chicago | Advocate Illinois Masonic Medical Center | Evanston | Evanston Hospital |
| Chicago | Advocate Trinity Hospital | Evanston | St Francis Hospital |
| Chicago | Lurie Children’s Hospital | Evergreen Park | Little Company of Mary Hospital |
| Chicago | Holy Cross Hospital | Geneva | Delnor Community Hospital (NM) |
| Chicago | Jackson Park Hospital | Glendale Heights | Adventist GlenOaks |
| Chicago | John H Stroger Jr Hospital (Cook County) | Glenview | Glenbrook Hospital |
| Chicago | | Harvey | Ingalls Memorial Hospital (UChicago) |
| Chicago | | Hazel Crest | Advocate South Suburban Hospital |
| Chicago | Loretto Hospital | Highland Park | Highland Park Hospital |
| Chicago | | Hinsdale | Adventist Hinsdale Hospital |
| Chicago | Insight Hospital and Medical Center | Hinsdale | RML Specialty Hospital |
| Chicago | | Hoffman Estates | St Alexius Hospital |
| Chicago | Kindred Hospital | Joliet | Saint Joseph Medical Center |
| Chicago | | Joliet | Silver Cross Hospital |
| Chicago | Northwestern Memorial Hospital | La Grange | AdventHealth LaGrange Hospital (UChicago) |
| Chicago | Humboldt Park Health | Lake Forest | Lake Forest Hospital (NM) |
| Chicago | Community First Medical Center | Libertyville | Advocate Condell Medical Center |
| Chicago | Provident Hospital of Cook County | Maywood | Loyola University Medical Center (Loyola) |
| Chicago | Resurrection Medical Center | Melrose Park | Gottlieb Memorial Hospital (Loyola) |
| Chicago | Roseland Community Hospital | | |
| Chicago | Rush University Medical Center | Naperville | Edward Hospital – Main Campus |
| Chicago | RML Specialty Hospital | Northlake | Kindred Hospital |
| Chicago | St Anthony Hospital | Oak Forest | |
| Chicago | St Bernard Hospital | Oak Lawn | Advocate Christ Medical Center Advocate Children’s Hospital |
| Chicago | Ascension Saint Joseph Hospital | Oak Park | Oak Park Hospital |
| Chicago | Sinai Hospital | Oak Park | West Suburban Medical Center |
| Chicago | South Shore Hospital | Olympia Fields | Franciscan Health Olympia Fields |
| Chicago | Swedish Hospital | Palos Heights | Palos Hospital (NM) |
| Chicago | Thorek Memorial Hospital | Park Ridge | Advocate Children’s Hospital |
| Chicago | Thorek Memorial Hospital Andersonville | Park Ridge | Advocate Lutheran General Hospital |
| Chicago | St. Mary of Nazareth | Skokie | Skokie Hospital |
| Chicago | University of Chicago Hospitals | Waukegan | Vista Medical Center East |
| Chicago | University of Illinois Hospital | | |
| Chicago | Weiss Memorial Hospital | Winfield | Central Dupage Hospital (NM) |
| | | Zion | City of Hope Cancer Center Chicago |