DR. GREGORY MICHAEL NICHOLSON M.D.
NPI 1851489868
Psychiatry & Neurology - Psychiatry in Norwalk, CA

Q: What is Gregory Nicholson's NPI number?

The NPI number for Gregory Nicholson is 1851489868. It was assigned to this individual provider in the NPPES registry on October 11, 2006.

Q: What is Gregory Nicholson's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gregory Nicholson was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 11, 2006

11401 BLOOMFIELD AVE, NORWALK, CA 90650(562) 863-7011(562) 864-4560 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Gregory Michael Nicholson M.d. NPPES

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

DR. GREGORY MICHAEL NICHOLSON M.D. (NPI 1851489868) is an individual psychiatry provider in Norwalk, California, licensed in California (A86080) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1851489868

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. GREGORY MICHAEL NICHOLSONCredential: M.D.

Location Address11401 BLOOMFIELD AVENorwalk, CA 90650-2015

Mailing Address1600 9th StSacramento, CA 95814-6404 · (916) 654-2431 · Fax (916) 654-3186

Phone(562) 863-7011

Fax(562) 864-4560

Sole ProprietorNo

Enumeration DateOctober 11, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1851489868 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 CA · A86080

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.

11401 BLOOMFIELD AVE, Norwalk, CA 90650

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Other Providers at the Same Location NPPES 20

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

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