DR. CLAYTON LONG CHIEU CHAU MD, PHD
NPI 1104914449
Psychiatry & Neurology - Psychiatry in Brea, CA

Q: What is Clayton Chau's NPI number?

The NPI number for Clayton Chau is 1104914449. It was assigned to this individual provider in the NPPES registry on October 11, 2006.

Q: What is Clayton Chau'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 Clayton Chau was last updated on April 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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

354 OLINDA DR, BREA, CA 92823(714) 248-4507(714) 248-4507 Get Directions Write a Review

NPPES record last updated: April 29, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Clayton Long Chieu Chau Md, Phd NPPES

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

DR. CLAYTON LONG CHIEU CHAU MD, PHD (NPI 1104914449) is an individual psychiatry provider in Brea, California, licensed in California (A64740) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1104914449

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. CLAYTON LONG CHIEU CHAUCredential: MD, PHD

Location Address354 OLINDA DRBrea, CA 92823-7040

Mailing Address354 Olinda DrBrea, CA 92823-7040 · (714) 248-4507 · Fax (714) 248-4507

Phone(714) 248-4507

Fax(714) 248-4507

Sole ProprietorYes

Enumeration DateOctober 11, 2006

Last NPPES UpdateApril 29, 2026

NPPES CertifiedApril 29, 2026

✔ NPI 1104914449 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 · A64740

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.

354 OLINDA DR, Brea, CA 92823

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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 Clayton Chau's NPI number?

The NPI number for Clayton Chau is 1104914449. It was assigned to this individual provider in the NPPES registry on October 11, 2006.

Where is Clayton Chau located?

Clayton Chau practices at 354 Olinda Dr, Brea, CA 92823. The listed phone number is (714) 248-4507.

What is Clayton Chau'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 Clayton Chau was last updated on April 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.