317-622-8970Search all companies →Largest Healthcare & Life Science Companies in Idaho (2026)
Factur's directory lists 21,856 healthcare & life science companies in Idaho. These are the 10 largest of them by annual revenue, led by St Luke's Health System ($2.6B), Saint Alphonsus Regional Medical Center ($796M) and Cascadia Healthcare LLC ($661M).
Size mix: of the 21,856 with a known headcount, 98.6% have 1-50 employees, 1.1% 51-200, 53 companies 201-1000, 6 companies 1001-5000 and 2 companies 5001+. 20 employ more than 500 people.
The 10 largest healthcare & life science companies in Idaho by annual revenue
| # | Company | City | Employees | Annual revenue |
|---|---|---|---|---|
| 1 | St Luke's Health System | Boise | 18,000 | $2.6B |
| 2 | Saint Alphonsus Regional Medical Center | Boise | 5,250 | $796M |
| 3 | Cascadia Healthcare LLC | Eagle | 4,500 | $661M |
| 4 | Assisting Hands | Nampa | 2,758 | $405M |
| 5 | Portneuf Health Partners | Pocatello | 2,525 | $330M |
| 6 | Kootenai Health | Coeur D Alene | 1,782 | $313M |
| 7 | Idaho State Hospital North | Orofino | 129 | $253M |
| 8 | St Joseph Regional Medical Center | Lewiston | 576 | $193M |
| 9 | Kootenai Hospital District | Coeur D Alene | 361 | $159M |
| 10 | Eastern Idaho Regional Medical Center (EIRMC) | Idaho Falls | 2,128 | $145M |
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 Idaho 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.