Massachusetts General Hospital
- Beds, FY2025
- 997
- Executives
- 15,571
- Discharges, FY2025
- 47,091
- Net patient revenue, FY2025
- $4.45B
- Facility address
- 55 Fruit Street, Boston, MA 02114
- Main phone
- (617) 726-2000
- Designations
- Designated trauma center, burn unit, neonatal ICU and pediatric ICU
Parent organization
Massachusetts General Hospital
Hospital organization · Boston, Massachusetts
Ultimate parent organization
Mass General Brigham
Health system · Somerville, Massachusetts
Find the right contacts among 15,571 executives and 7,809 HCPs
Professional emails, personal emails and mobile numbers for Massachusetts General Hospital's buying committee, with a free Dmand AI account.
Massachusetts General Hospital is a 997-bed teaching hospital in Boston, Massachusetts
Massachusetts General Hospital is a nonprofit hospital in Mass General Brigham, with a major medical school affiliation.
Sources: Provider of Services File - Hospital & Non-Hospital Facilities (CMS); Dmand AI Org Hierarchy Data; and Hospital Provider Cost Report (CMS)
Alexyss Femino is president of Massachusetts General Hospital
Dmand AI tracks 15,571 executives and staff leaders at Massachusetts General Hospital. Waterfall enrichment finds their professional emails, personal emails and mobile numbers.
Executives by department
- Nursing3,509, names and contacts available with a free account
- Research and Clinical Trials2,374, names and contacts available with a free account
- Physicians and medical leadership1,426, names and contacts available with a free account
- Service lines and programs1,190, names and contacts available with a free account
- Diagnostics1,027, names and contacts available with a free account
- Operations and administration967, names and contacts available with a free account
Get emails and mobile numbers for all 15,571 executives and leaders
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Source: Dmand AI Executive Data
Massachusetts General Hospital's NPI is 1023049236 and its CCN is 220071
- NPI
- 1023049236NPI Registry (opens in a new tab)
- CMS Certification Number (CCN)
- 220071
- Medicare PAC ID
- 6507803806
- Dmand ID
- SOC-H-002285
- Tax ID (EIN)
- 04-2697983
- Program participation
- Medicare and Medicaid
- Facility address
- 55 Fruit Street, Boston, MA 02114
- County
- Suffolk County
- Main phone
- (617) 726-2000
- Executive emails and mobiles
- Get contacts
- Facility type
- Acute care teaching hospital
- CMS hospital type
- Acute Care Hospital
- Ownership
- Voluntary Nonprofit - Other
- Setting
- Urban
- Accreditation
- The Joint Commission
- Teaching status
- Teaching hospital, major medical school affiliation
Sources: NPPES NPI Registry (CMS); Provider of Services File - Hospital & Non-Hospital Facilities (CMS); Dmand AI Org Hierarchy Data; Dmand AI Organization Profile Data; and Hospital Enrollments (CMS)
Massachusetts General Hospital is part of Mass General Brigham
Dmand AI places Massachusetts General Hospital under Massachusetts General Hospital, part of Mass General Brigham. Mass General Brigham also runs 13 other hospitals and 60 medical groups.
- Mass General Brigham
- Massachusetts General Hospital
- Massachusetts General Hospital
- 23 outpatient sites
13 other hospitals in Mass General Brigham
Outpatient sites under Massachusetts General Hospital
Source: Dmand AI Org Hierarchy Data
Org hierarchy
See every hospital, unit and off-campus site from the IDN down, with the executives and HCPs at each one, in a free Dmand AI account.
Massachusetts General Hospital has 997 beds and discharged 47,091 inpatients in fiscal 2025
| Bed type | Beds |
|---|---|
| Staffed beds (fiscal 2025 cost report) | 997 |
| Licensed beds | 1,043 |
| CMS certified beds | 907 |
| Psychiatric unit beds | 24 |
Inpatient volume and staffing, fiscal 2025
- Inpatient discharges
- 47,091
- Inpatient days
- 355,762
- Average length of stay
- 7.6 days
- Occupancy
- 97.8% of available bed days
- Medicare discharges
- 15,225 (32.3%)
- Medicaid discharges
- 5,629 (12.0%)
- Employees on payroll
- 22,140 FTE
- Registered nurses
- 2,667
- Residents and interns
- 743 FTE
Trauma, burn, intensive care and transplant services
- Designated trauma center
- Yes
- Burn unit
- Yes
- Neonatal ICU
- Yes
- Pediatric ICU
- Yes
- Medicare-certified transplant center
- Yes
Sources: Provider of Services File - Hospital & Non-Hospital Facilities (CMS); and Hospital Provider Cost Report (CMS)
Massachusetts General Hospital had 13,982 Medicare inpatient discharges across 298 DRGs
Outpatient, it billed Medicare for 15,898 services in 52 ambulatory payment classifications (APCs). CMS publishes only the DRGs and APCs with 11 or more cases, so the smallest ones are left out of these counts.
- Medicare inpatient discharges
- 13,982
- Diagnosis related groups (DRGs)
- 298
- Medicare outpatient services
- 15,898
Most common Medicare inpatient DRGs at Massachusetts General Hospital
- 871Septicemia or severe sepsis without MV >96 hours with MCC640
- 291Heart failure and shock with MCC466
- 177Respiratory infections and inflammations with MCC329
- 219Cardiac valve and other major cardiothoracic procedures without cardiac catheterization263
- 274Percutaneous and other intracardiac procedures without MCC256
Medicare fee-for-service discharges per diagnosis related group (DRG). Share is of all Medicare discharges CMS reports for the hospital.
Most billed Medicare outpatient services at Massachusetts General Hospital
Medicare fee-for-service services per ambulatory payment classification (APC). Share is of all Medicare outpatient services CMS reports for the hospital.
Sources: Medicare Inpatient Hospitals - by Provider and Service (CMS); and Medicare Outpatient Hospitals - by Provider and Service (CMS)
Massachusetts General Hospital has a 5-star CMS overall quality rating
CMS rates hospitals from 1 to 5 stars on mortality, safety of care, readmissions, patient experience and timely and effective care. The patient survey stars come from 593 completed HCAHPS surveys, a 22% response rate.
- CMS overall star rating
- 5 of 5
- Patient survey (HCAHPS) summary
- 4 of 5
- Completed patient surveys
- 593
How patients rate Massachusetts General Hospital in the CMS patient survey (HCAHPS)
- Nurse communication4 of 5
- Doctor communication4 of 5
- Communication about medicines3 of 5
- Discharge information4 of 5
- Cleanliness4 of 5
- Quietness2 of 5
- Overall hospital rating4 of 5
- Recommend the hospital5 of 5
Sources: Hospital General Information (CMS); and Patient survey (HCAHPS) - Hospital (CMS)
Massachusetts General Hospital is one of the 10 US hospitals with the most affiliated HCPs
Massachusetts General Hospital ranks in the US top 10 by affiliated HCPs and leads Massachusetts by beds, affiliated HCPs, net patient revenue and employees.
Affiliated HCPs in Massachusetts
Rank 1 of 97
7,809 affiliated HCPs
Massachusetts hospitals by affiliated HCPsNet patient revenue in Massachusetts
Rank 1 of 89
$4.45 billion
Massachusetts hospitals by net patient revenueInpatient discharges in Massachusetts
Rank 2 of 96
47,091 inpatient discharges
Busiest hospitals in MassachusettsOutpatient sites in Massachusetts
Rank 2 of 62
23 outpatient sites
Massachusetts hospitals by outpatient sites
Ranks compare size, not quality of care, among hospitals with a Dmand AI profile that report each measure. Ties share a rank.
Sources: Dmand AI Affiliation Data, Hospital Provider Cost Report (CMS) and Dmand AI Org Hierarchy Data
Massachusetts General Hospital offers 50 of the 57 services CMS tracks
It has every service CMS tracks in 5 of the 10 service lines, and some of them in 5 more.
- Emergency and urgent care3 of 3
- Surgery9 of 10
- Intensive care6 of 6
- Imaging and lab7 of 7
- Cancer care2 of 2
- Maternity and children's care3 of 3
- Behavioral health5 of 7
- Rehabilitation and therapy6 of 7
- Transplant and kidney care3 of 4
- Pharmacy and support services6 of 8
Most specialized services at Massachusetts General Hospital
Offered by the fewest US hospitals.
Source: Provider of Services File - Hospital & Non-Hospital Facilities (CMS)
Massachusetts General Hospital reported $4.45 billion in net patient revenue in fiscal 2025
Its net income was 8.4% of net patient revenue.
- Net patient revenue
- $4.45B
- Gross patient revenue (charges)
- $15.8B
- Operating expenses
- $6.89B
- Net income
- $373M
- Uncompensated care
- $63.6M
- Estimated revenue leakage
- See the estimate
- Denied claims trend
- See denied claims
- Medicare
- Participates
- Medicaid
- Participates
- Medicare share of inpatient days
- 32.0%
- Medicaid share of inpatient days
- 9.2%
- Commercial payer mix
- See payer mix
Source: Hospital Provider Cost Report (CMS)
Financials
Get denied inpatient and outpatient claims, Medicare and Medicaid revenue splits, and the Dmand AI revenue leakage estimate for Massachusetts General Hospital, with year-over-year trends.
7,809 HCPs are affiliated with Massachusetts General Hospital
Massachusetts General Hospital physicians by specialty
- Internal medicine1,067
- Diagnostic radiology452
- Anesthesiology276
- Cardiovascular disease222
- Psychiatry220
Share of the 5,328 physicians Dmand AI links to Massachusetts General Hospital.
Medical groups with the most clinicians at Massachusetts General Hospital
232 groups with 5 or more clinicians here. Clinicians can bill through more than one group, so counts overlap.
Physicians at Massachusetts General Hospital
Sources: NPPES NPI Registry (CMS); and Dmand AI Affiliation Data
Dmand AI tracks 465 products in 25 technology categories at Massachusetts General Hospital
Vendor names, products and install status are available with a free account.
| Category | Vendor and product | Install status |
|---|---|---|
| EHR, ambulatory | Available with a free account | Available with a free account |
| EHR, inpatient | Available with a free account | Available with a free account |
| EHR | Available with a free account | Available with a free account |
| Revenue Cycle Management | Available with a free account | Available with a free account |
| Clinical and Business Intelligence | Available with a free account | Available with a free account |
Source: Dmand AI Technology Install Data
Technology
Get vendor and product names and install status for all 25 categories tracked at Massachusetts General Hospital, plus the IT leaders who own them.
Anne Klibanski is listed as president and CEO in Massachusetts General Hospital's CMS ownership record
Massachusetts General Hospital's CMS ownership record lists 9 corporate directors, 5 corporate officers and 3 others.
- Anne KlibanskiPresident and CEO · Corporate officerSince 2019
- Carl J MartignettiVice chair · Corporate officerSince 2019
- Diane PatrickVice chair · Corporate officerSince 2019
Source: Hospital All Owners (CMS)
Hospitals similar in size to Massachusetts General Hospital
These acute care hospitals in the Northeast have the closest bed counts to Massachusetts General Hospital on their latest cost reports.
| Hospital | Beds | Discharges |
|---|---|---|
| Hospital of the University of PennsylvaniaPhiladelphia, PA | 1,002 | 43,973 |
| Buffalo General Medical Center/Gates Vascular InstituteBuffalo, NY | 954 | 49,100 |
| The Mount Sinai HospitalNew York, NY | 1,046 | 58,334 |
| UPMC PresbyterianPittsburgh, PA | 1,093 | 42,722 |
| Thomas Jefferson University HospitalPhiladelphia, PA | 866 | 38,070 |
Sources: Hospital Provider Cost Report (CMS); and Dmand AI Peer Benchmarks
Sources for Massachusetts General Hospital data
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Massachusetts General Hospital
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is the address and phone number of Massachusetts General Hospital?
Massachusetts General Hospital is at 55 Fruit Street, Boston, MA 02114. Its main phone number is (617) 726-2000.
Who is the CEO of Massachusetts General Hospital?
Dmand AI lists Alexyss Femino as president of Massachusetts General Hospital. It tracks 15,571 executives and leaders there in all, including 49 C-suite leaders, 39 founders, 11 owners, 3 partners, 27 vice presidents, 74 department heads, 720 directors and 1,095 managers.
How many beds does Massachusetts General Hospital have?
Massachusetts General Hospital has 997 staffed beds on its fiscal 2025 Medicare cost report and is licensed for 1,043.
What is Massachusetts General Hospital's CMS star rating?
Massachusetts General Hospital has 5 out of 5 stars in the CMS Overall Hospital Quality Star Rating and 4 out of 5 stars in the HCAHPS patient survey.
How many Medicare patients does Massachusetts General Hospital admit?
CMS reports 13,982 Medicare fee-for-service inpatient discharges at Massachusetts General Hospital across 298 DRGs. The most common is septicemia or severe sepsis without MV >96 hours with MCC.
Is Massachusetts General Hospital one of the largest hospitals in the US?
Yes. Massachusetts General Hospital ranks 2nd of 6,018 US hospitals by affiliated HCPs, with 7,809 affiliated HCPs.
How does Massachusetts General Hospital rank among Massachusetts hospitals?
Massachusetts General Hospital ranks 1st by beds, 1st by affiliated HCPs, 1st by net patient revenue, 1st by employees and 2nd by inpatient discharges among Massachusetts hospitals with a Dmand AI profile.
How many patients does Massachusetts General Hospital treat each year?
Massachusetts General Hospital discharged 47,091 inpatients in fiscal 2025, with 355,762 inpatient days.
Is Massachusetts General Hospital a teaching hospital?
Yes. CMS lists Massachusetts General Hospital as a teaching hospital with a major medical school affiliation and 743 resident and intern FTEs.
Is Massachusetts General Hospital a trauma center?
Yes. Massachusetts General Hospital's CMS file lists a designated trauma center.
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What is Massachusetts General Hospital's annual revenue?
Massachusetts General Hospital reported $4.45 billion in net patient revenue in fiscal 2025, on $15.77 billion in gross charges.
Is Massachusetts General Hospital profitable?
Massachusetts General Hospital reported a net income of $373 million on its fiscal 2025 Medicare cost report.
What share of Massachusetts General Hospital's patients are on Medicare or Medicaid?
Medicare covered 32.0% and Medicaid 9.2% of inpatient days at Massachusetts General Hospital in fiscal 2025.
What health system is Massachusetts General Hospital part of?
Massachusetts General Hospital is part of Mass General Brigham, based in Somerville. Mass General Brigham has 13 other hospitals in Dmand AI.
Who owns Massachusetts General Hospital?
Massachusetts General Hospital is a nonprofit hospital (Voluntary Nonprofit - Other in CMS records). Dmand AI places it under Mass General Brigham. Its CMS ownership record lists 17 owners, directors and managers, including Anne Klibanski.
What physician groups are affiliated with Massachusetts General Hospital?
Groups with the most clinicians at Massachusetts General Hospital include Massachusetts General Physicians Organization (MGPO) and Massachusetts General Hospital. Dmand AI finds 232 medical groups with 5 or more clinicians there.
How many physicians work at Massachusetts General Hospital?
Dmand AI links 5,328 physicians and 7,809 HCPs in all to Massachusetts General Hospital with a current affiliation.
What is Massachusetts General Hospital's NPI number?
Massachusetts General Hospital's NPI number is 1023049236.
What is Massachusetts General Hospital's CCN?
Massachusetts General Hospital's CMS Certification Number (CCN) is 220071.
Is Massachusetts General Hospital for-profit or nonprofit?
Massachusetts General Hospital is a nonprofit hospital, listed as Voluntary Nonprofit - Other in CMS records.
Selling to acute care hospitals?
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