How many hospitals in Illinois are rated 4 or 5 stars by CMS?

As of April 2026, 36.0% of the 136 CMS star-rated hospitals in Illinois hold 4 or 5 stars (14 5-star, 35 4-star, 43 3-star, 29 2-star, 15 1-star). The mean rating is 3.03 stars and the Gera US Hospital Quality Index for Illinois is 50.6 out of 100. Source: CMS Hospital Care Compare.

How does Illinois compare to the US average for hospital quality?

Illinois scores 50.6 on the Gera US Hospital Quality Index, against the national figure of 55.1. Its mean CMS star rating is 3.03 versus the US mean of 3.21, and 36.0% of its rated hospitals are 4 or 5-star, compared with 41.9% nationally. Illinois ranks 38 of 49 rated states. All figures are CMS’s own star ratings.

Where can I check the CMS rating of a specific hospital in Illinois?

Every Medicare-registered hospital has its own page on the CMS Hospital Care Compare website showing its overall star rating and its mortality, safety, readmission, patient experience and timely-care results. Search by hospital name or ZIP code at medicare.gov/care-compare, or use the interactive finder on this page to see how Illinois compares before you choose.

Hospital Quality in Illinois

Real CMS Hospital Care Compare star ratings for Illinois, April 2026, across 136 rated hospitals — plus the Gera US Hospital Quality Index.

How good are the hospitals in Illinois, and how do they compare to the US average?

As of April 2026, 36.0% of the 136 CMS star-rated hospitals in Illinois hold 4 or 5 stars (mean 3.03 stars), against 41.9% nationally. Its Gera US Hospital Quality Index is 50.6/100 (US 55.1), ranking 38 of 49 states, per CMS Hospital Care Compare.

Source:Centers for Medicare & Medicaid Services — Hospital Care Compare (Hospital General Information)·as of April 2026updated quarterly (last: 18 June 2026)

Gera US Hospital Quality IndexIllinois 50.6 / 100Rank 38 of 49 states. The US average is 55.1. A transparent 0-100 summary of CMS star ratings adjusted for mortality and readmission outcomes.How this index is calculated

Illinois CMS hospital star ratings, April 2026 (CMS, public domain)
Star rating	Hospitals	Share
5 stars	14	10.3%
4 stars	35	25.7%
3 stars	43	31.6%
2 stars	29	21.3%
1 star	15	11.0%
Total rated	136	100%

Illinois vs the US average — April 2026
Measure	Illinois	United States
Gera US Hospital Quality Index	50.6 / 100	55.1 / 100
Mean CMS star rating	3.03	3.21
4 or 5 stars	36.0%	41.9%
Rated hospitals	136	3,182

5-star hospitals in Illinois

Examples shown are CMS 5-star acute care hospitals in Illinois; this is not an exhaustive list and not a Gera endorsement.

Compare another state

See any state's real CMS star-rating breakdown, the Gera US Hospital Quality Index, how it compares to the US average, and 5-star hospital examples.

State

In Illinois, of 136 CMS star-rated hospitals, 36.0% hold 4 or 5 stars (as of April 2026). It ranks 38 of 49 states on the Gera US Hospital Quality Index.

5-star

10.3%

14 hospitals

4-star

25.7%

35 hospitals

3-star

31.6%

43 hospitals

2-star

21.3%

29 hospitals

1-star

11.0%

15 hospitals

Gera US Hospital Quality Index

50.6 / 100

US average: 55.1

Mean CMS star rating

3.03

US mean: 3.21

vs US average

-4.5 pts

41.9% of US hospitals are 4-5 star

5-star hospital examples in Illinois

Northshore University Healthsystem - Evanston Hospital — Evanston, IL
Uchicago Medicine Adventhealth La Grange — La Grange, IL

Ratings are CMS’s own official star ratings, not Gera ratings. The distribution covers CMS star-rated hospitals only; hospitals without a published overall star rating are excluded. A rating can be several months old — always check the latest detail on CMS Hospital Care Compare before deciding.

Navigating hospital care in Illinois? A GeraClinic care navigator can help you read CMS star ratings, compare hospitals, and prepare for your appointment — with a clinician available online.

Talk to a GeraClinic care navigator

Frequently asked questions

How many hospitals in Illinois are rated 4 or 5 stars by CMS?: As of April 2026, 36.0% of the 136 CMS star-rated hospitals in Illinois hold 4 or 5 stars (14 5-star, 35 4-star, 43 3-star, 29 2-star, 15 1-star). The mean rating is 3.03 stars and the Gera US Hospital Quality Index for Illinois is 50.6 out of 100. Source: CMS Hospital Care Compare.
How does Illinois compare to the US average for hospital quality?: Illinois scores 50.6 on the Gera US Hospital Quality Index, against the national figure of 55.1. Its mean CMS star rating is 3.03 versus the US mean of 3.21, and 36.0% of its rated hospitals are 4 or 5-star, compared with 41.9% nationally. Illinois ranks 38 of 49 rated states. All figures are CMS’s own star ratings.
Where can I check the CMS rating of a specific hospital in Illinois?: Every Medicare-registered hospital has its own page on the CMS Hospital Care Compare website showing its overall star rating and its mortality, safety, readmission, patient experience and timely-care results. Search by hospital name or ZIP code at medicare.gov/care-compare, or use the interactive finder on this page to see how Illinois compares before you choose.

Navigating hospital care in Illinois?

A GeraClinic care navigator can help you interpret CMS star ratings, compare hospitals, and prepare for your appointment — with a clinician available online.

Talk to a GeraClinic care navigator US hospital quality by state — all states

Contains public sector information published by Centers for Medicare & Medicaid Services and licensed under the U.S. Public Domain (federal government work). Source: Centers for Medicare & Medicaid Services — Hospital Care Compare (Hospital General Information) (April 2026, published 28 April 2026).