317-622-8970Search all companies →Largest Healthcare & Life Science Companies in Massachusetts (2026)
Factur's directory lists 124,883 healthcare & life science companies in Massachusetts. These are the 10 largest of them by annual revenue, led by Mass General Brigham Inc ($20.6B), Fresenius Medical Care AG ($14.1B) and Fresenius Medical Care Holdings Inc ($13.5B).
Size mix: of the 124,881 with a known headcount, 98.8% have 1-50 employees, 1,073 companies 51-200, 296 companies 201-1000, 59 companies 1001-5000 and 32 companies 5001+. 142 employ more than 500 people.
The 10 largest healthcare & life science companies in Massachusetts by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | Mass General Brigham Inc | Somerville | 80,000 | $20.6B |
| 2 | Fresenius Medical Care AG | Waltham | 70,000 | $14.1B |
| 3 | Fresenius Medical Care Holdings Inc | Waltham | 36,825 | $13.5B |
| 4 | Mass General Brigham | Somerville | 80,000 | $11.7B |
| 5 | Careport, Powered By Wellsky® | Boston | 1,000 | $10B |
| 6 | Allwyn Entertainment Ltd | Boston | 8,000 | $9.9B |
| 7 | DraftKings Inc | Boston | 5,500 | $6.1B |
| 8 | Beth Israel Lahey Health | Burlington | 39,000 | $5.6B |
| 9 | Dana-Farber Cancer Institute | Boston | 9,211 | $3.5B |
| 10 | Brigham and Women's Hospital | Boston | 21,000 | $2.8B |
How this list is ranked
Companies are ranked by annual revenue (USD) as recorded on each company's profile in the Factur directory, highest first; companies with the same revenue are ordered by employee count. Only companies with a positive revenue figure on file are ranked, so a large private company with no reported revenue can be missing. The list covers companies whose record places them in Massachusetts and whose Factur industry is Healthcare & Life Science. Figures are a snapshot of the directory, refreshed when the rankings are regenerated; open a profile for its current data.