What is Gregory Friedman's NPI number?

Gregory Friedman's National Provider Identifier (NPI) is 1235002957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Gregory Friedman's specialty?

Gregory Friedman is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).

Where is Gregory Friedman located?

Gregory Friedman's practice location on file with NPPES is 535 Dean St Apt 225, Brooklyn, NY 11217-2181.

What is Gregory Friedman's phone number?

The practice phone number listed in the NPPES registry for Gregory Friedman is (917) 822-4539.

Is Gregory Friedman's NPI active?

Yes — Gregory Friedman's NPI (1235002957) is active in the NPPES registry as of the last update on 2025-09-29.

IndividualActive

Gregory Friedman, PHD

NPI 1235002957 · Psychologist · Brooklyn, NY

Gregory Friedman, PHD is a Psychologist provider in Brooklyn, NY (NPI 1235002957).

Provider details

NPI number: 1235002957
Entity type: Individual
Primary specialty: PsychologistBehavioral Health & Social Service Providers
Credential: PHD
Sex: Male
Sole proprietor: Yes
License: 027567 (NY)

Specialties & taxonomies

PsychologistPrimary103T00000XLicense 027567 (NY)
Behavioral Health & Social Service Providers

Profile Score

Established profile(54/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

535 Dean St Apt 225

Brooklyn, NY 11217-2181

Phone: (917) 822-4539

Street-level locationGet directions

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Mailing address