DR. CLIFFORD KARL CHANG O.D.
NPI 1558539007
Optometrist in San Francisco, CA

Q: What is Clifford Chang's NPI number?

The NPI number for Clifford Chang is 1558539007. It was assigned to this individual provider in the NPPES registry on February 19, 2008.

Q: What is Clifford 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 Clifford Chang was last updated on April 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 February 19, 2008

929 CLAY ST, 203, SAN FRANCISCO, CA 94108(415) 982-1700(415) 982-1750 Get Directions Write a Review

NPPES record last updated: April 23, 2008. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Clifford Karl Chang O.d. NPPES

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

DR. CLIFFORD KARL CHANG O.D. (NPI 1558539007) is an individual optometrist in San Francisco, California, licensed in California (4031) and active in the NPI registry since February 2008.

NPPES Registry Identity

NPI1558539007

Entity TypeIndividualMale

Primary Taxonomy152W00000X

Provider Legal NameDR. CLIFFORD KARL CHANGCredential: O.D.

Location Address929 CLAY ST, 203San Francisco, CA 94108-1556

Mailing Address929 Clay St, 203San Francisco, CA 94108-1556 · (415) 982-1700 · Fax (415) 982-1750

Phone(415) 982-1700

Fax(415) 982-1750

Sole ProprietorYes

Enumeration DateFebruary 19, 2008

Last NPPES UpdateApril 23, 2008

✔ NPI 1558539007 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 · 4031

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.

929 CLAY ST, San Francisco, CA 94108

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Other Identifiers 2

Medicare PINSD0040710CA

Other0288920001CA · Supplier Number

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.

DR. WENWU JIN M.D., PH.D.

Urology

929 CLAY ST, SUITE 505
SAN FRANCISCO, CA 94108

San Francisco County (415) 392-9690

RAYMOND FAY MD

Urology

929 CLAY ST, #505
SAN FRANCISCO, CA 94108

San Francisco County (415) 392-9690

WENWU JIN MD PHD INCORPORATED

Urology

929 CLAY ST, SUITE 505
SAN FRANCISCO, CA 94108

San Francisco County (415) 392-9690

COLLIN P. QUOCK, M.D., A MEDICAL CORPORATION

Contractor

929 CLAY ST, SUITE 201
SAN FRANCISCO, CA 94108

San Francisco County (415) 398-5100

DR. KE H TUAN M.D.

Obstetrics & Gynecology

929 CLAY ST, 305
SAN FRANCISCO, CA 94108

San Francisco County (415) 398-7178

MR. DAVID S YEE MD

Ophthalmology

929 CLAY ST, STE 405
SAN FRANCISCO, CA 94108

San Francisco County (415) 986-3239

DAVID KE-H TUAN, MD., INC.

Obstetrics & Gynecology

929 CLAY ST, SUITE 305
SAN FRANCISCO, CA 94108

San Francisco County (415) 398-7178

DR. CLIFFORD CHEW MD

Otolaryngology

929 CLAY ST, SUITE 501
SAN FRANCISCO, CA 94108

San Francisco County (415) 433-7945

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 Clifford Chang's NPI number?

The NPI number for Clifford Chang is 1558539007. It was assigned to this individual provider in the NPPES registry on February 19, 2008.

Where is Clifford Chang located?

Clifford Chang practices at 929 Clay St 203, San Francisco, CA 94108. The listed phone number is (415) 982-1700.

What is Clifford Chang's specialty?

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

When was this NPI record last updated?

The NPPES record for Clifford Chang was last updated on April 23, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.