John Fountain, MD
NPI 1225590383 · Critical Care Medicine (Internal Medicine) Physician · Boston, MA
Provider details
- NPI number
- 1225590383
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 1019462 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (3)
- 15 Parkman StBoston, MA 02114-3117Phone: (617) 724-9674
- 330 Brookline AveBoston, MA 02215-5400Phone: (617) 724-9674
- 300 Mount Auburn St Ste 419Cambridge, MA 02138-5665Phone: (617) 354-8771
Registry dates
- Enumerated
- 2019-04-05
- Last updated
- 2026-05-26
- Certified
- 2026-05-26
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.