Marc Gagnier, MD
NPI 1265960470 · Psychiatry Physician · Clinton, MA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Gagnier, MD is a Psychiatry Physician provider in Clinton, MA (NPI 1265960470).
Provider details
- NPI number
- 1265960470
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 292576 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2017-06-01
- Last updated
- 2022-10-24
- Certified
- 2022-10-24
Frequently asked questions
- What is Marc Gagnier's NPI number?
- Marc Gagnier's National Provider Identifier (NPI) is 1265960470, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Gagnier's specialty?
- Marc Gagnier is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Gagnier located?
- Marc Gagnier's practice location on file with NPPES is 201 Highland St, Clinton, MA 01510-1037.
- What is Marc Gagnier's phone number?
- The practice phone number listed in the NPPES registry for Marc Gagnier is (978) 368-3000.
- Does Marc Gagnier accept Medicare?
- Marc Gagnier is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Gagnier's NPI active?
- Yes — Marc Gagnier's NPI (1265960470) is active in the NPPES registry as of the last update on 2022-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.