What is Vivian Chang's NPI number?

Vivian Chang's National Provider Identifier (NPI) is 1881547859, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Vivian Chang's specialty?

Vivian Chang is listed in the NPPES registry with a primary specialty of Community Health Worker (Other Service Providers).

Where is Vivian Chang located?

Vivian Chang's practice location on file with NPPES is 7200 Bancroft Ave Ste 202, Oakland, CA 94605-2471.

What is Vivian Chang's phone number?

The practice phone number listed in the NPPES registry for Vivian Chang is (510) 383-5181.

Is Vivian Chang's NPI active?

Yes — Vivian Chang's NPI (1881547859) is active in the NPPES registry as of the last update on 2026-02-18.

IndividualActive

Vivian Chang

NPI 1881547859 · Community Health Worker · Oakland, CA

Vivian Chang is a Community Health Worker provider in Oakland, CA (NPI 1881547859).

Provider details

NPI number: 1881547859
Entity type: Individual
Primary specialty: Community Health WorkerOther Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Community Health WorkerPrimary172V00000X
Other Service Providers

Profile Score

Basic profile(47/100 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
83% 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

7200 Bancroft Ave Ste 202

Oakland, CA 94605-2471

Phone: (510) 383-5181

Street-level locationGet directions

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Mailing address