What is Clifford Chang's NPI number?

Clifford Chang's National Provider Identifier (NPI) is 1558539007, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Clifford Chang's specialty?

Clifford Chang is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).

Where is Clifford Chang located?

Clifford Chang's practice location on file with NPPES is 929 Clay St, San Francisco, CA 94108-1556.

What is Clifford Chang's phone number?

The practice phone number listed in the NPPES registry for Clifford Chang is (415) 982-1700.

Is Clifford Chang's NPI active?

Yes — Clifford Chang's NPI (1558539007) is active in the NPPES registry as of the last update on 2008-04-23.

IndividualActive

Clifford Chang, O.D.

NPI 1558539007 · Optometrist · San Francisco, CA

Clifford Chang, O.D. is a Optometrist provider in San Francisco, CA (NPI 1558539007).

Provider details

NPI number: 1558539007
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: O.D.
Sex: Male
Sole proprietor: Yes
License: 4031 (CA)

Specialties & taxonomies

OptometristPrimary152W00000XLicense 4031 (CA)
Eye and Vision Services Providers

Profile Score

Detailed profile(88/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
18 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

929 Clay St

203

San Francisco, CA 94108-1556

Phone: (415) 982-1700

Fax: (415) 982-1750

Street-level locationGet directions

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Mailing address