DR. DEREK YEE-HSIANG CHAR PSY.D.
NPI 1235954652
Clinical Neuropsychologist in Pomona, CA

Q: What is Derek Char's NPI number?

The NPI number for Derek Char is 1235954652. It was assigned to this individual provider in the NPPES registry on November 20, 2024.

Q: What is Derek Char's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

Q: When was this NPI record last updated?

The NPPES record for Derek Char was last updated on December 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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 November 20, 2024

255 E BONITA AVE OFC 1420, POMONA, CA 91767(909) 596-7733 Get Directions Write a Review

NPPES record last updated: December 3, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Dec 3, 2025, Nov 20, 2024 (2 updates tracked since 2024).

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About Dr. Derek Yee-hsiang Char Psy.d. NPPES

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

DR. DEREK YEE-HSIANG CHAR PSY.D. (NPI 1235954652) is an individual clinical neuropsychologist in Pomona, California, licensed in California (PSY35392) and active in the NPI registry since November 2024.

NPPES Registry Identity

NPI1235954652

Entity TypeIndividualMale

Primary Taxonomy103G00000X

Provider Legal NameDR. DEREK YEE-HSIANG CHARCredential: PSY.D.

Location Address255 E BONITA AVE OFC 1420Pomona, CA 91767-1923

Mailing Address255 E Bonita AvePomona, CA 91767-1933

Phone(909) 596-7733

Sole ProprietorNo

Enumeration DateNovember 20, 2024

Last NPPES UpdateDecember 3, 20252 updates tracked since enumeration

NPPES CertifiedDecember 3, 2025

✔ NPI 1235954652 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers

Taxonomy Code103G00000X

License✔ Licensed in CA · PSY35392

Definition

A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

Also ListedPsychologistTaxonomy 103T00000X · License PSY35392 (CA)

Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License PSY35392 (CA)

Also ListedPsychologist · RehabilitationTaxonomy 103TR0400X · License PSY35392 (CA)

255 E BONITA AVE OFC 1420, Pomona, CA 91767

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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 Derek Char's NPI number?

The NPI number for Derek Char is 1235954652. It was assigned to this individual provider in the NPPES registry on November 20, 2024.

Where is Derek Char located?

Derek Char practices at 255 E Bonita Ave Ofc 1420, Pomona, CA 91767. The listed phone number is (909) 596-7733.

What is Derek Char's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

When was this NPI record last updated?

The NPPES record for Derek Char was last updated on December 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.