Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. OLIVIA L CHANG PH.D.
NPI 1245470418
Psychologist - Clinical in Martinez, CA

Q: What is Olivia Chang's NPI number?

The NPI number for Olivia Chang is 1245470418. It was assigned to this individual provider in the NPPES registry on March 2, 2009.

Q: What is Olivia Chang's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Olivia Chang was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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 March 02, 2009

150 MUIR RD, MARTINEZ, CA 94553(925) 372-2586 Get Directions Write a Review

NPPES record last updated: September 21, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

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About Dr. Olivia L Chang Ph.d. NPPES

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

DR. OLIVIA L CHANG PH.D. (NPI 1245470418) is an individual clinical provider in Martinez, California, licensed in Virginia (0810004344) and active in the NPI registry since March 2009.

NPPES Registry Identity

NPI1245470418

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. OLIVIA L CHANGCredential: PH.D.

Location Address150 MUIR RDMartinez, CA 94553-4668

Mailing Address150 Muir RdMartinez, CA 94553-4668

Phone(925) 372-2586

Sole ProprietorNo

Enumeration DateMarch 2, 2009

Last NPPES UpdateSeptember 21, 2026

NPPES CertifiedSeptember 21, 2026

✔ NPI 1245470418 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in VA · 0810004344

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Also ListedPsychologistTaxonomy 103T00000X

150 MUIR RD, Martinez, CA 94553

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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.

RAMYA KANTHARAJ

Student in an Organized Health Care Education/Training Program

150 MUIR RD
MARTINEZ, CA 94553

Contra Costa County (916) 843-7028

SAHIBA SINGH CHOWDHARY PSYD

Psychologist (Clinical)

150 MUIR RD
MARTINEZ, CA 94553

Contra Costa County (925) 372-2557

NESLIHAN JAMES-KANGAL PHD

Psychologist

150 MUIR RD
MARTINEZ, CA 94553

Contra Costa County (925) 370-4783

NIKKI ALONSO ATIS

Occupational Therapist

150 MUIR RD
MARTINEZ, CA 94553

Contra Costa County (925) 372-2000

DR. BERNADETTE M DUGONI PHARM D

Pharmacist

150 MUIR RD
MARTINEZ, CA 94553

Contra Costa County (925) 372-2390

PAMELA ADHLAKHA

Occupational Therapist

150 MUIR RD
MARTINEZ, CA 94553

Contra Costa County (925) 370-4751

DR. ASHIQ MATHEW GEORGE M.D.

Psychiatry & Neurology (Psychiatry)

150 MUIR RD, MENTAL HEALTH CLINIC (116)
MARTINEZ, CA 94553

Contra Costa County (925) 372-2000

UMELO UGWOABA PHD, MPH

Psychologist

150 MUIR RD
MARTINEZ, CA 94553

Contra Costa County (925) 372-2558

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 Olivia Chang's NPI number?

The NPI number for Olivia Chang is 1245470418. It was assigned to this individual provider in the NPPES registry on March 2, 2009.

Where is Olivia Chang located?

Olivia Chang practices at 150 Muir Rd, Martinez, CA 94553. The listed phone number is (925) 372-2586.

What is Olivia Chang's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Olivia Chang was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.