Massachusetts General Hospital
Hospitals
220071CMS Rating
Star ratings are CMS's relative measure, not an absolute “best” claim. A 3-star facility is average.
Trust Verification Checklist
- Medicare-certified & active
- CMS rating published
- CMS overall hospital rating 3+ stars
Quality & Outcomes
4/5
Patient survey rating
HCAHPS summary star
85%
Would definitely recommend
of surveyed patients
79%
Rated hospital 9-10
of surveyed patients
283 min
ER wait (median)
time in ED before leaving; lower is better
8 better / 0 worse
Outcomes vs national
across 20 mortality & safety measures
Better than national average
Heart-failure death rate
No different from national average
Serious complications (PSI-90)
Published CMS measures for this facility. Confirm the latest on the official Care Compare page.
Peer Comparison
5
This facility (stars)
3.2
State average (stars)
12
Hospitals in Boston
100
FacilityProof trust score
Official CMS Record
We reproduce CMS data — always confirm the live record on Medicare's official Care Compare page.
View on Care CompareQuick Facts
- Type
- Hospital
- Ownership
- Non profit
- CCN
- 220071
- City facilities
- 33
Location
Last updated (CMS): June 1, 2026