Hospitals in Illinois

Hospital overall rating: “The Overall Star Rating summarizes measures publicly reported on Care Compare into a single rating. The measures come from the IQR, OQR, and other programs and encompass measures in five measure groups: mortality, safety of care, readmission, patient experience, timely & effective care. The hospitals can receive between one and five stars, with five stars being the highest rating, and the more stars, the better the hospital performs on the quality measures.”

Patient survey star rating (HCAHPS summary star rating): “HCAHPS Star Ratings provide a quick summary of each HCAHPS measure in a format that allows consumers to more easily compare hospitals. The HCAHPS Summary Star Rating is a roll-up of all the HCAHPS Star Ratings.”

Facility file: CMS catalog date (released): Aug. 13, 2026; downloaded Oct. 15, 2026. Survey file: CMS catalog date (released): Aug. 13, 2026; downloaded Oct. 15, 2026. Source: CMS's Hospital data dictionary, July 2026: CMS's data dictionary.

A to Z by CMS's name for the facility. Sorted by CMS's rating (Hospital overall rating), the rated hospitals come first by CMS's number; the ones CMS does not rate follow as their own group, "No CMS rating", A to Z and not ranked; CMS gives a reason on each page.