DR. WILLIAM CHANG OD
NPI 1629206834
Optometrist in San Gabriel, CA

Q: What is William Chang's NPI number?

The NPI number for William Chang is 1629206834. It was assigned to this individual provider in the NPPES registry on June 25, 2009.

Q: What is William Chang's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for William Chang was last updated on September 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 June 25, 2009PECOS Enrolled

417 S SAN GABRIEL BLVD, SUITE B, SAN GABRIEL, CA 91776(626) 291-2020(626) 585-2905 Get Directions Write a Review

NPPES record last updated: September 16, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. William Chang Od NPPES

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

DR. WILLIAM CHANG OD (NPI 1629206834) is an individual optometrist in San Gabriel, California, licensed in California (TLG13713) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629206834

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameDR. WILLIAM CHANGCredential: OD

Location Address417 S SAN GABRIEL BLVD, SUITE BSan Gabriel, CA 91776-1967

Mailing Address417 S San Gabriel Blvd, Suite BSan Gabriel, CA 91776-1967 · (626) 291-2020 · Fax (626) 585-2905

Phone(626) 291-2020

Fax(626) 585-2905

Sole ProprietorNo

Enumeration DateJune 25, 2009

Last NPPES UpdateSeptember 16, 2021

NPPES CertifiedSeptember 16, 2021

✔ NPI 1629206834 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

License✔ Licensed in CA · TLG13713

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

417 S SAN GABRIEL BLVD, San Gabriel, CA 91776

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Other Identifiers 1

OtherCR713ZCA · Medicare Ptan

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Chang Od is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91776 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$142.39 typical visit price

range $62.96 – $187.60

Typical copayment $35.59 (range $15.74 – $46.90)

Most-billed visit code 99204

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

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

WILLIAM CHANG OD, INC

Optometrist

417 S SAN GABRIEL BLVD, SUITE B
SAN GABRIEL, CA 91776

Los Angeles County (626) 291-2020

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 William Chang's NPI number?

The NPI number for William Chang is 1629206834. It was assigned to this individual provider in the NPPES registry on June 25, 2009.

Where is William Chang located?

William Chang practices at 417 S San Gabriel Blvd Suite B, San Gabriel, CA 91776. The listed phone number is (626) 291-2020.

What is William Chang's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is William Chang enrolled in Medicare?

Yes. William Chang is registered in the Medicare PECOS enrollment system.

What insurance does William Chang accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list William Chang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Chang was last updated on September 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.