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DR. GREGORY ARNOLD CLARK M.D.
NPI 1396899779
Psychiatry & Neurology - Psychiatry in Belmont, MA

Active since January 22, 2007
5 WATSON RD, BELMONT, MA 02478(617) 484-5010 Get Directions Write a Review

NPPES record last updated: February 4, 2008. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Gregory Arnold Clark M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GREGORY ARNOLD CLARK M.D. (NPI 1396899779) is an individual psychiatry provider in Belmont, Massachusetts, licensed in Massachusetts (47684) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1396899779
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. GREGORY ARNOLD CLARKCredential: M.D.
Location Address5 WATSON RDBelmont, MA 02478-3924
Mailing Address5 Watson RdBelmont, MA 02478-3924 · (617) 484-5010
Phone(617) 484-5010
Sole ProprietorYes
Enumeration DateJanuary 22, 2007
Last NPPES UpdateFebruary 4, 2008
✔ NPI 1396899779 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MA · 47684
Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

5 WATSON RD, Belmont, MA 02478
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Other Identifiers 2

Medicare ID-Type UnspecifiedCLE05959MA
Medicare UPIN373888MA

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. CAROL ANN LAMBERT MSW
Social Worker (Clinical)
5 WATSON RD
BELMONT, MA 02478
Middlesex County (617) 484-2272
BARBARA GORTYCH PH.D.
Psychologist
5 WATSON RD
BELMONT, MA 02478
Middlesex County (617) 484-4576
MS. BARBARA P. WYNER LICSW
Social Worker (Clinical)
5 WATSON RD, SUITE 202
BELMONT, MA 02478
Middlesex County (617) 504-6985
MS. DOROTHY HELENA MANDEL LMHC
Counselor (Mental Health)
5 WATSON RD
BELMONT, MA 02478
Middlesex County (617) 354-3195
DR. STEPHANIE T MACHELL PSY.D.
Psychologist (Clinical)
5 WATSON RD
BELMONT, MA 02478
Middlesex County (617) 776-4001
SUMMIT PSYCHOTHERAPY LLC
Clinic/Center (Adult Mental Health)
5 WATSON RD
BELMONT, MA 02478
Middlesex County (617) 826-9814
DR. EILEEN R WIZNITZER PSY.D.
Psychologist
5 WATSON RD, #101
BELMONT, MA 02478
Middlesex County (339) 223-6002
MR. PETER GUTHRIE LICSW
Social Worker (Clinical)
5 WATSON RD, #203
BELMONT, MA 02478
Middlesex County (617) 489-8910

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory Clark's NPI number?

The NPI number for Gregory Clark is 1396899779. It was assigned to this individual provider in the NPPES registry on January 22, 2007.

Where is Gregory Clark located?

Gregory Clark practices at 5 Watson Rd, Belmont, MA 02478. The listed phone number is (617) 484-5010.

What is Gregory Clark's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Gregory Clark was last updated on February 4, 2008. NPI Profile syncs with the weekly NPPES data releases published by CMS.