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Private company

Mass General Brigham

Health care system based in Greater Boston, Massachusetts

Mass General Brigham (MGB) (formerly Partners HealthCare) is a not-for-profit integrated health care system based in Somerville, Massachusetts. MGB is the largest private employer in Massachusetts, and through its member institutions engages in medical fields such as patient care, research, and education.2 Its revenue was $1.9 billion in 2024.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1994Founded1
  • HeadquartersBoston, United States1
  • Websitewww.massgeneralbrigham.org
  • Legal formNon-Profit Corporation3
  • Kind of organizationNonprofit organization1
  • LEI5493007Z86EDN0QFYU663
  • StatusActive3
  • LEI statusLapsed (not renewed)3
  • Registered address800 Boylston Street, 02199 Boston, United States3
  • Registered withCorporations Division (Secretary of the Commonwealth's Office), 0432300353

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Healthcare Building
Photo: Patriot-place, CC BY-SA 4.0, via Wikimedia Commons4

Mass General Brigham (MGB) (formerly Partners HealthCare) is a not-for-profit integrated health care system based in Somerville, Massachusetts. MGB is the largest private employer in Massachusetts, and through its member institutions engages in medical fields such as patient care, research, and education.2

Corporate structure

Mass General Brigham sits at the top of its group. 12 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Mass General Brigham Boston, Massachusetts, United States
    • Brigham and Women's Hospital Subsidiary · Massachusetts, United States
    • Cooley Dickinson Hospital Subsidiary · Northampton, United States
    • Martha's Vineyard Hospital Subsidiary · Dukes County, United States
    • Massachusetts General Hospital Subsidiary · Boston, United States
    • McLean Hospital Subsidiary · Belmont, United States
    • Nantucket Cottage Hospital Subsidiary · Nantucket County, United States
    • Newton-Wellesley Hospital Subsidiary · Newton, United States
    • Salem Hospital Subsidiary · Salem, United States
    • Spaulding Rehabilitation Hospital Subsidiary · Massachusetts, United States
    • Spaulding Rehabilitation Hospital Cape Cod Subsidiary · Barnstable County, United States
    • Wentworth Douglass Hospital Subsidiary · Dover, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Subsidiaries

  • Brigham and Women's Hospital
  • Cooley Dickinson Hospital
  • Martha's Vineyard Hospital
  • Massachusetts General Hospital
  • McLean Hospital
  • Nantucket Cottage Hospital
  • Newton-Wellesley Hospital
  • Salem Hospital
  • Spaulding Rehabilitation Hospital
  • Spaulding Rehabilitation Hospital Cape Cod
  • Wentworth Douglass Hospital

From Wikidata.1

Revenue over time

As stated on Wikidata, in the currency reported.

Revenue

Mass General Brigham revenue by year1$1.9B in 2024+125% since 2015
0$1.0B$2.0B$3.0B2015: $847.1M$847.1M20152016: $884.0M$884.0M2016+4%2017: $1.3B$1.3B2017+45%2018: $1.3B$1.3B2018+3%2019: $923.8M$923.8M2019−30%2020: $2.2B$2.2B2020+136%2021: $2.0B$2.0B2021−10%2022: $2.1B$2.1B2022+7%2023: $2.1B$2.1B2023−2%2024: $1.9B$1.9B2024−7%
  • 2024$1.9B1
  • 2023$2.1B1
  • 2022$2.1B1
  • 2021$2.0B1
  • 2020$2.2B1
  • 2019$923.8M1

Timeline

  1. 1994Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
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