Hospital rankings
Hospitals in Massachusetts with the lowest left ED without being seen
53 Massachusetts hospitals ranked by left ED without being seen in the 2026 Medicare (CMS) data. Filter by type, ownership and size, choose the measures you care about, and sort by any column.
| # | Hospital | Left ED without being seenlower is better | Overall star ratinghigher is better | Patient survey star ratinghigher is better | Heart attack death ratelower is better | Heart failure death ratelower is better | Hospital-wide readmission ratelower is better · 2025 data | Serious complicationslower is better | Time in emergency departmentlower is better | Medicare spending per patientlower is better | Total beds | Compare |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| National average | 2.0% | 3.3 | 11.9% | 11.1% | 15.0% | 1.00 | 162 min | 1.00 | ||||
| T50 | Mercy Medical Center | 8.0%, 1st percentile | 2, 17th percentile | 3, 39th percentile | 11.7%, 54th percentile | 12.3%, 25th percentile | 15.7%, 13th percentile | 0.93, 63rd percentile | 275 min, 2nd percentile | 1.01, 38th percentile | 339 | Compare Mercy Medical Center |
| 52 | Lowell General Hospital | 9.0%, 1st percentile | 2, 17th percentile | 3, 39th percentile | 12.4%, 29th percentile | 10.5%, 60th percentile | 16.1%, 6th percentile | 1.20, 10th percentile | 267 min, 3rd percentile | 0.98, 55th percentile | 158 | Compare Lowell General Hospital |
| 53 | Anna Jaques Hospital | 23.0%, 0th percentile | 3, 43rd percentile | 2, 10th percentile | 12.1%, 38th percentile | 8.8%, 88th percentile | 15.5%, 19th percentile | 1.04, 28th percentile | 188 min, 25th percentile | 0.97, 61st percentile | 123 | Compare Anna Jaques Hospital |
About these rankings
Rankings use the 2026 release of CMS Care Compare data. Hospitals share a rank (“T”) when their values are equal, and only hospitals with a reported value for the sorted measure are ranked. Shading compares each value with every hospital in the country, so it doesn’t change with your filters. Small differences are often not statistically meaningful; use the methodology and glossary for context.
- Left ED without being seen
- Percentage of patients who left the emergency department before being seen.
- Overall star rating
- CMS overall hospital quality star rating (1-5).
- Patient survey star rating
- HCAHPS summary star rating (1-5).
- Heart attack death rate
- 30-day death rate for heart attack patients.
- Heart failure death rate
- 30-day death rate for heart failure patients.
- Hospital-wide readmission rate
- Rate of unplanned readmission within 30 days, all conditions. From 2025 CMS reports the Hybrid Hospital-Wide Readmission measure (claims plus EHR data), which replaced the claims-only measure; values are close but not strictly comparable across the change. CMS suppressed it for 2026.. Latest available: 2025 release.
- Serious complications
- Patient safety and adverse events composite (PSI 90; 1.0 = national value).
- Time in emergency department
- Median time patients spent in the emergency department before leaving.
- Medicare spending per patient
- Medicare spending per beneficiary episode relative to the national median (1.0 = national median).
- Total beds
- Total beds reported to CMS (Provider of Services file).