What is Gregory Clark's NPI number?

Gregory Clark's National Provider Identifier (NPI) is 1396899779, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gregory Clark's specialty?

Gregory Clark is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Gregory Clark located?

Gregory Clark's practice location on file with NPPES is 5 Watson Rd, Belmont, MA 02478-3924.

What is Gregory Clark's phone number?

The practice phone number listed in the NPPES registry for Gregory Clark is (617) 484-5010.

Is Gregory Clark's NPI active?

Yes — Gregory Clark's NPI (1396899779) is active in the NPPES registry as of the last update on 2008-02-04.

IndividualActive

Gregory Clark, M.D.

NPI 1396899779 · Psychiatry Physician · Belmont, MA

Gregory Clark, M.D. is a Psychiatry Physician provider in Belmont, MA (NPI 1396899779).

Provider details

NPI number: 1396899779
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: 47684 (MA)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense 47684 (MA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 index)

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

5 Watson Rd

Belmont, MA 02478-3924

Phone: (617) 484-5010

Street-level locationGet directions

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Mailing address