Top 10 US States by Number of Five-Star CMS Hospitals
PlainHospital ranks US states by the number of five-star hospitals on the CMS Hospital Compare Overall Star Rating, using the state_stats aggregate. Updated automatically as new data is processed.
Research period:
Research question
Across the 50 US states and the District of Columbia, which jurisdictions host the highest number of five-star hospitals on the CMS Hospital Compare Overall Star Rating, and how does five-star concentration scale with total hospital count and rated-hospital population per state?
Methodology
This ranking reflects the data currently in our database, sourced from the agency referenced in the citation below and updated automatically as new filings are processed.
Coverage and exclusions: the source agency occasionally suppresses values for confidentiality, small sample size, or quality control, and suppressed rows are excluded from this ranking rather than shown as zero. If the agency later revises a figure, the revised value replaces the old one automatically the next time our data is refreshed.
Data provenance: we pull each release as it becomes available and normalize it into our database; a later release simply supersedes the one before it, so readers never see a mix of old and new figures on the same page.
Comparability across years: when the source agency revises its release schedule, definitions, or coverage, we note the affected years on the methodology page so readers can compare like-with-like rather than across a changed measurement.
Editorial governance: a named editor reviews every ranking page before publication (see the byline above). If an entity disputes a figure attributed to it, corrections are checked against the official source record before any change is made.
Every number on this page can be traced back to its source by following the entity links and the citation below, so independent verification never requires anything beyond the original public source.
See the methodology page for the complete ETL pipeline, source vintage, and column lineage.
Top 10 US States by Number of Five-Star CMS Hospitals
Live data: reflects the current dataset
The ranked top 10
Every row below reflects the current 10-record dataset. Reload the page after new data is processed to see the latest values.
| # | State | Five-star hospitals | Total hospitals | Average star rating |
|---|---|---|---|---|
| 1 | California | 25 | 378 | 3.01 |
| 2 | Texas | 22 | 465 | 3.24 |
| 3 | Ohio | 15 | 196 | 3.42 |
| 4 | Pennsylvania | 15 | 188 | 3.28 |
| 5 | Wisconsin | 13 | 142 | 3.77 |
| 6 | Colorado | 12 | 97 | 3.87 |
| 7 | Illinois | 12 | 194 | 2.91 |
| 8 | Indiana | 12 | 150 | 3.33 |
| 9 | New York | 12 | 190 | 2.53 |
| 10 | Florida | 11 | 222 | 2.83 |
Source: Centers for Medicare & Medicaid Services, CMS Hospital Compare, Overall Star Rating. Values reflect the current dataset, refreshed as new filings are processed. Centers for Medicare & Medicaid Services, CMS Hospital Compare, Overall Star Rating. Values reflect the current dataset, refreshed as new filings are processed.
Findings
Top entity in the ranking
The top-ranked record in this dataset is California, with a value of 25 on the Five-star hospitals column. The full top-10 set is rendered in the table above. Every value comes directly from the current dataset; no number is hardcoded into this page. When the Centers for Medicare & Medicaid Services publishes a revision, the ranking and the prose around it update automatically.
Distribution shape
The gap between the top-ranked record (25) and the 10th-ranked record (11) characterizes how concentrated the top of the distribution is. Where the top value is many multiples of the median value of the visible set, the population is highly concentrated, a small number of entities accumulate the bulk of the measured quantity. Where the top and bottom of the visible set are close together, the distribution is relatively flat across the top end. The full distribution beyond this top-10 cut is summarized in the aggregate context section below and explored in the linked entity profiles.
Aggregate context
Across the full population behind this ranking, here are the summary statistics: how many records exist in total, the sum of the ranking metric across all qualifying records, and the mean per-record value. The methodology page documents the exact filter applied (records with null or zero values on the ranking metric are excluded). This aggregate row is computed from the same dataset that powers the ranking above.
Source provenance
The records in this ranking originate from Centers for Medicare & Medicaid Services, specifically the CMS Hospital Compare, Overall Star Rating. PlainHospital ingests the source vintage published by the agency and keeps this page current, there is no static export carrying stale numbers, and a newly published dataset is reflected here within hours. The methodology page documents the source URL, the vintage date, and the steps applied to prepare the data.
Why this ranking matters
Rankings like this one let a reader scan a population quickly and identify outliers, concentrations, and patterns that warrant deeper investigation. The detail pages linked from each entity in the table above give the full per-entity context: time-series history where available, related metrics from adjacent tables, and links onward to the underlying source records. The methodology page explains how an entity earns inclusion in the dataset and how the ranking column is computed at the source.
What this analysis cannot tell us
The CMS Hospital Compare Overall Star Rating consolidates 47 measures across mortality, safety of care, readmission, patient experience, timely and effective care, and efficient use of medical imaging into a single 1-to-5-star score. Not all hospitals are rated, small-volume hospitals, specialty hospitals, and hospitals lacking sufficient data on the constituent measures are excluded, so a state's five-star count reflects both quality and the share of hospitals eligible for rating. State counts are inherently scale-correlated: large states like California, Texas, and Florida host more hospitals overall and naturally accumulate more five-star ratings, while small states like Wyoming and Vermont have fewer total hospitals and therefore fewer absolute five-star ratings even at high per-capita rates. The Overall Star Rating methodology weights measures and groups them into categories; CMS periodically revises the methodology, and ratings can shift between annual refreshes for reasons unrelated to underlying hospital quality changes. The rating is a snapshot of historical performance, not a real-time quality monitor.
Secondary cut from the same source
Top 10 states by average CMS star rating among hospitals with a published rating (minimum 10 rated hospitals to qualify)
Sources
- CMS, Hospital Compare Overall Hospital Rating - https://www.cms.gov/Medicare/Quality-Initiatives-Patient-Assessment-Instruments/HospitalQualityInits/HospitalCompare
- CMS, Care Compare for Hospitals - https://www.medicare.gov/care-compare/
Every figure on PlainHospital is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.