CMS certification 220071
Massachusetts General Hospital
55 Fruit Street, Boston, MA 02114
Massachusetts General Hospital has a CMS overall rating of 5 out of 5 stars. 85% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. Of the 27 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 15 and worse on 4. Emergency patients spend a median of 4 h 48 min in its emergency department before leaving (US median 2 h 42 min).
Every figure on this page is published by CMS; we arrange and explain it, and score nothing ourselves.
What patients said
Answers from patients who stayed here, collected by CMS in the national HCAHPS survey: 593 completed surveys, 22% response rate, Oct 2024 – Sep 2025.
Emergency department
How long emergency patients spent here and how some time-critical care went, from CMS's timely and effective care measures, Oct 2024 – Sep 2025. CMS classes this emergency department's patient volume as very high; busier departments tend to have longer times, so the national median for departments of the same volume is shown too. These are medians over a year of visits, not a live wait time.
| Measure | This hospital | MA | US |
|---|---|---|---|
| Median time in the emergency department before leaving Lower is better · 353 visits sampled · US median for EDs of the same volume: 3 h 21 min | 4 h 48 min | 3 h 34 min | 2 h 42 min |
| Median time for psychiatric and mental health patients Lower is better · 38 visits sampled | 1 h 18 min | 5 h 38 min | 4 h 17 min |
| Left before being seen Lower is better · 119,116 patients | 4% | 4% | 2% |
| Stroke symptoms: brain scan read within 45 minutes Higher is better · 11 patients | 27% | 70% | 69% |
| Severe sepsis and septic shock: all recommended care given Higher is better · 130 patients | 49% | 56% | 65% |
How Massachusetts General Hospital compares with nearby hospitals
The closest hospitals of the same kind that CMS rates or surveys - the same city first, then the same county and ZIP area. Every figure is CMS's: the overall star rating, the share of patients who would definitely recommend the hospital, the median time emergency patients spent before leaving, and how many death, complication, infection and readmission measures CMS found better or worse than the national rate.
| Hospital | CMS stars | Would recommend | ER median time | Vs the nation |
|---|---|---|---|---|
| Massachusetts General HospitalThis hospital | 5/5 | 85% | 4 h 48 min | 15 better 4 worse |
| Massachusetts Eye and Ear InfirmarySame city | Not rated | 83% | 2 h 54 min | No different |
| Brigham and Women's HospitalSame city | 5/5 | 81% | 5 h | 8 better 2 worse |
| Tufts Medical CenterSame city | 2/5 | 79% | 3 h 28 min | 2 better 3 worse |
| Boston Medical CenterSame city | 3/5 | 73% | 3 h 47 min | 4 better 1 worse |
| New England Baptist HospitalSame city | 5/5 | 86% | — | 2 better 1 worse |
Hospitals differ in size and in how sick their patients are. CMS adjusts its outcome measures for that, but a star or a percentage is a starting point for questions, not a verdict. All hospitals in Boston.
Deaths
How many patients died within 30 days of admission, adjusted by CMS for how sick they were. Lower is better. Data from Jul 2022 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| All patients, hospital-wide 8,665 cases | Too few cases | 1.8% | 3.9% |
| Heart attack 449 cases | Too few cases | 9.3% | 11.9% |
| Heart failure 1,447 cases | Too few cases | 6.8% | 11.1% |
| Pneumonia 1,254 cases | Too few cases | 12.9% | 15.2% |
| Stroke 546 cases | Too few cases | 10.1% | 11.9% |
| COPD 283 cases | Too few cases | 5.3% | 8.6% |
| Heart bypass surgery (CABG) 404 cases | Too few cases | 1.5% | 2.4% |
Complications
How often patients had serious complications, most of them after surgery, adjusted for how sick they were. Lower is better. Data from Jul 2022 – Jun 2024.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Serious complications, combined measure | No different | 0.87 likely 0.74 – 1 | 1 |
| After hip or knee replacement 206 cases | Too few cases | 5.4% | 4.1% |
| Deaths after a serious but treatable surgical complication 628 cases | No different | 190.21 per 1,000 likely 166.55 per 1,000 – 213.87 per 1,000 | 173.3 per 1,000 |
| Pressure ulcers (bed sores) 25,523 cases | No different | 0.52 per 1,000 likely 0.25 per 1,000 – 0.8 per 1,000 | 0.63 per 1,000 |
| Collapsed lung caused by a procedure 26,226 cases | No different | 0.24 per 1,000 likely 0.11 per 1,000 – 0.37 per 1,000 | 0.21 per 1,000 |
| Broken bones from falls in the hospital 28,785 cases | No different | 0.25 per 1,000 likely 0.11 per 1,000 – 0.38 per 1,000 | 0.27 per 1,000 |
| Bleeding or hematoma after surgery 9,851 cases | Better | 1.51 per 1,000 likely 0.72 per 1,000 – 2.29 per 1,000 | 2.34 per 1,000 |
| Kidney injury needing dialysis after surgery 5,984 cases | No different | 1.34 per 1,000 likely 0.58 per 1,000 – 2.1 per 1,000 | 1.67 per 1,000 |
| Breathing failure after surgery 5,808 cases | Better | 7.3 per 1,000 likely 5.25 per 1,000 – 9.36 per 1,000 | 9.42 per 1,000 |
| Blood clots in the lungs or legs after surgery 10,723 cases | No different | 4.43 per 1,000 likely 3.42 per 1,000 – 5.45 per 1,000 | 3.52 per 1,000 |
| Sepsis after surgery 5,957 cases | No different | 4.13 per 1,000 likely 2.55 per 1,000 – 5.7 per 1,000 | 5.27 per 1,000 |
| Surgical wound splitting open 2,526 cases | No different | 1.47 per 1,000 likely 0.36 per 1,000 – 2.57 per 1,000 | 1.77 per 1,000 |
| Accidental cut or tear during abdominal surgery 7,050 cases | No different | 0.51 per 1,000 likely 0 per 1,000 – 1.06 per 1,000 | 1.06 per 1,000 |
Infections caught in the hospital
Standardized infection ratio: 1.0 means as many infections as CMS predicted for a hospital like this one. Lower is better. Data from Oct 2024 – Sep 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Bloodstream infections from central lines (CLABSI) | Better | 0.61 likely 0.45 – 0.82 | 1 |
| Urinary tract infections from catheters (CAUTI) | No different | 1.02 likely 0.8 – 1.29 | 1 |
| Surgical site infections after colon surgery | No different | 1.32 likely 0.9 – 1.87 | 1 |
| Surgical site infections after abdominal hysterectomy | No different | 0.68 likely 0.11 – 2.25 | 1 |
| MRSA bloodstream infections | Better | 0.57 likely 0.36 – 0.87 | 1 |
| C. diff intestinal infections | Better | 0.72 likely 0.6 – 0.85 | 1 |
Readmissions and return visits
How often patients had to come back to a hospital after going home. Lower is better. Data from Jul 2023 – Jun 2025.
| Measure | CMS comparison | This hospital | National |
|---|---|---|---|
| Readmitted after a heart attack 615 cases | Too few cases | 13.5% | 14.4% |
| Readmitted after heart failure 1,580 cases | Too few cases | 19.7% | 21.3% |
| Readmitted after pneumonia 1,303 cases | Too few cases | 16.9% | 17.3% |
| Readmitted after COPD 335 cases | Too few cases | 19.2% | 20% |
| Readmitted after heart bypass surgery 268 cases | Too few cases | 8.8% | 11% |
| Readmitted after hip or knee replacement 211 cases | Too few cases | 5.9% | 5.8% |
| Days back in hospital after a heart attack 620 cases | Too few cases | 21.5 days per 100 | — |
| Days back in hospital after heart failure 1,711 cases | Too few cases | 12.7 days per 100 | — |
| Days back in hospital after pneumonia 1,288 cases | Too few cases | 23.1 days per 100 | — |
| Unplanned visits after an outpatient colonoscopy 10,145 cases | Better | 10.1 per 1,000 likely 8.6 per 1,000 – 11.9 per 1,000 | 13 per 1,000 |
| Hospital admissions during outpatient chemotherapy 3,011 cases | No different | 10.6 per 100 likely 9.5 per 100 – 11.8 per 100 | 10.7 per 100 |
| ER visits during outpatient chemotherapy 3,011 cases | Better | 3.8 per 100 likely 3.2 per 100 – 4.5 per 100 | 5.4 per 100 |
| Unplanned visits after outpatient surgery 3,940 cases | Better | 0.7 likely 0.6 – 0.8 | — |
1 more measure had too few cases here to report.
Clinicians registered at this address
4,635 clinicians give this hospital's street address as their practice location in NPPES, the federal provider registry, plus 1,058 residents and trainees. The same address can take in offices and clinics in the building, and a listing does not prove admitting privileges or current employment.
| Specialty | Clinicians |
|---|---|
| Nurse Practitioner | 452 |
| Diagnostic Radiology | 331 |
| Internal Medicine | 314 |
| Physician Assistant | 261 |
| Anesthesiology | 220 |
| Psychiatry | 171 |
| Clinical | 146 |
| Neurology | 121 |
| Cardiovascular Disease | 113 |
| Pediatrics | 111 |
| Family | 106 |
| Adult Health | 103 |
First 12 alphabetically
Money from drug and device companies
Drug and device makers have to report what they pay teaching hospitals to CMS's Open Payments program. At many teaching hospitals most of it is research funding, or royalties for inventions the hospital licensed to a company. A payment on its own does not show a conflict of interest.
- 2019 $270.7M
- 2020 $57.4M
- 2021 $99M
- 2022 $95.3M
- 2023 $89.4M
- 2024 $91.6M
- 2025 $59.2M
What the 2025 general payments were for
| Type of payment | Amount | Payments |
|---|---|---|
| Royalties and licensing fees | $10.5M | 112 |
| Grants | $1.1M | 45 |
| Charitable contributions | $534,775 | 3 |
| Speaking, teaching and other services | $414,638 | 17 |
| Consulting fees | $205,021 | 23 |
| Medical devices and supplies on long-term loan | $116,324 | 21 |
| Space rental and facility fees | $32,200 | 11 |
| Debt forgiveness | $13,538 | 7 |
| Education | $5,000 | 1 |
| Food and beverage | $3,422 | 2 |
| Gifts | $750 | 1 |
Largest paying companies, 2025
| Company | Amount | Payments |
|---|---|---|
| AstraZeneca Pharmaceuticals LP | $4.1M | 14 |
| Illumina, Inc. | $3.5M | 4 |
| Sanofi US Services INC. | $3.1M | 43 |
| E.R. Squibb & Sons, L.L.C. | $2.8M | 24 |
| Amgen Inc. | $2.6M | 21 |
| Stryker Corporation | $2.3M | 9 |
| Terumo Medical Corporation | $2.3M | 3 |
| Genentech, Inc. | $2.2M | 65 |
Largest research studies funded here, 2025
| Study | Amount |
|---|---|
| 45th Multicenter Airway Research Collaboration MARC45 AstraZeneca Pharmaceuticals LP | $2.1M |
| A Phase 1a/1b Open-Label Dose Escalation and Expansion Study of Bcl-2 Inhibitor BGB-11417 in Patients With Mature B-Cell Malignancies BeOne Medicines Ltd. · NCT04277637 | $1.8M |
| Abatacept in immune checkpoint inhibitor myocarditis E.R. Squibb & Sons, L.L.C. | $1.6M |
| The Sybil Implementation Consortium AstraZeneca Pharmaceuticals LP | $1M |
| DEFINE/DEVELOP LEARNING PLATFORM GE HEALTHCARE | $838,559 |
| Discovering BCMA-targeting CAR-T therapy response and toxicity mechanisms using single-cell RNA sequencing and immune profiling Kite Pharma, Inc. | $831,013 |
| HRS HARMONY - A MULTICENTER COLLABORATIVE AND ANALYSIS OF TERLIPRESSIN TREATMENT Mallinckrodt Hospital Products Inc. | $802,009 |
| A randomized, double-blind, placebo-controlled, multicenter, phase 3, pivotal study with an open-lable extension period to evaluate the efficacy and … UCB SA · NCT05063162 | $737,329 |
Amounts are as the paying companies reported them to CMS; Open Payments data retrieved 13 Sep 2026. Full record on CMS Open Payments.
How to read this page
- Everything here is published by CMS on Care Compare. We arrange it and explain it; the star ratings and the better / worse verdicts are CMS's, not ours.
- “No different” is the most common result on most measures at most hospitals. CMS only calls a result better or worse when the difference from the national rate is statistically clear.
- Death, complication and readmission rates are adjusted by CMS for how sick patients were, so hospitals that treat sicker patients can be compared fairly.
- Infection results are ratios: 1.0 means as many infections as CMS predicted for a hospital like this one, below 1.0 is fewer.
- These are hospital-wide results. They do not rate an individual doctor, nurse or department, and they are not medical advice.
CMS Care Compare data retrieved 4 Oct 2026, refreshed weekly. Where this data comes from and how we handle it · Report an error
Common questions about Massachusetts General Hospital
Is Massachusetts General Hospital a good hospital?
Massachusetts General Hospital has a CMS overall rating of 5 out of 5 stars. Of the 27 death, complication, infection and readmission measures CMS could compare, it does better than the nation on 15 and worse on 4. These are hospital-wide results published by CMS; they do not rate individual doctors or departments.
Would patients recommend Massachusetts General Hospital?
85% of patients who answered CMS's national survey would definitely recommend it, against a US average of 71%. The figure comes from 593 completed HCAHPS surveys.
How long is the wait in the Massachusetts General Hospital emergency room?
Emergency patients spend a median of 4 h 48 min in its emergency department before leaving (US median 2 h 42 min). Among US emergency departments with very high patient volume, like this one, the median is 3 h 21 min. 4% of emergency patients left before being seen (US 2%). These are medians over a year of visits, not a live wait time.
Does Massachusetts General Hospital receive money from drug and device companies?
Drug and device makers reported $59.2M in payments to Massachusetts General Hospital for 2025, most of it research funding, under the federal Open Payments program. A payment on its own does not show a conflict of interest.