O
Bloomington
- OSF St. Joseph Medical Center
Galesburg
- OSF Saint Mary Medical Center
Oak Forest
Ottawa, Illinois
- Ottawa Regional Medical Center
- Oak Forest Hospital of Cook County
Peoria
- OSF Saint Francis Medical Center
Pontiac
- OSF Saint James-John W. Albrecht Medical Center
Rockford
- OSF Saint Anthony Medical Center
Oak Park, Illinois West Suburban Hospital
Read more about this topic: List Of Hospitals In Illinois