What is Jyh-Han Chang's NPI number?

Jyh-Han Chang's National Provider Identifier (NPI) is 1841181765, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Jyh-Han Chang's specialty?

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

Where is Jyh-Han Chang located?

Jyh-Han Chang's practice location on file with NPPES is 2575 Yorba Linda Blvd, Fullerton, CA 92831-1615.

What is Jyh-Han Chang's phone number?

The practice phone number listed in the NPPES registry for Jyh-Han Chang is (657) 786-6132.

Is Jyh-Han Chang's NPI active?

Yes — Jyh-Han Chang's NPI (1841181765) is active in the NPPES registry as of the last update on 2025-07-25.

IndividualActive

Jyh-Han Chang, OD

NPI 1841181765 · Optometrist · Fullerton, CA

Jyh-Han Chang, OD is a Optometrist provider in Fullerton, CA (NPI 1841181765).

Provider details

NPI number: 1841181765
Entity type: Individual
Primary specialty: OptometristEye and Vision Services Providers
Credential: OD
Sex: Male
Sole proprietor: No
License: 36011 (CA)

Specialties & taxonomies

OptometristPrimary152W00000XLicense 002892 (AZ)
Eye and Vision Services Providers
Optometrist152W00000XLicense 36011 (CA)
Eye and Vision Services Providers

Profile Score

Established profile(54/100 index)

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

Registry tenure38% of score
Under 1 yr in 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

2575 Yorba Linda Blvd

Fullerton, CA 92831-1615

Phone: (657) 786-6132

Approximate (ZIP-level) locationGet directions

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Mailing address