John Hamilton, M.D.,M.SC.
NPI 1548334147 · Psychiatry Physician · Cambridge, MA
John Hamilton, M.D.,M.SC. is a Psychiatry Physician provider in Cambridge, MA (NPI 1548334147).
Provider details
- NPI number
- 1548334147
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.,M.SC.
- Sex
- Male
- Sole proprietor
- No
- License
- G56659 (CA)
Specialties & taxonomies
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2006-11-17
- Last updated
- 2015-01-14
Frequently asked questions
- What is John Hamilton's NPI number?
- John Hamilton's National Provider Identifier (NPI) is 1548334147, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hamilton's specialty?
- John Hamilton is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is John Hamilton located?
- John Hamilton's practice location on file with NPPES is 75 Mount Auburn St, Cambridge, MA 02138-4960.
- What is John Hamilton's phone number?
- The practice phone number listed in the NPPES registry for John Hamilton is (617) 495-2323.
- Is John Hamilton's NPI active?
- Yes — John Hamilton's NPI (1548334147) is active in the NPPES registry as of the last update on 2015-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.