What is Andrew Chang's NPI number?

Andrew Chang's National Provider Identifier (NPI) is 1447001102, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Andrew Chang's specialty?

Andrew Chang is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).

Where is Andrew Chang located?

Andrew Chang's practice location on file with NPPES is 222 W 39th Ave, San Mateo, CA 94403-4364.

What is Andrew Chang's phone number?

The practice phone number listed in the NPPES registry for Andrew Chang is (650) 954-0544.

Is Andrew Chang's NPI active?

Yes — Andrew Chang's NPI (1447001102) is active in the NPPES registry as of the last update on 2025-06-18.

IndividualActive

Andrew Chang, MD

NPI 1447001102 · Psychiatry Physician · San Mateo, CA

Andrew Chang, MD is a Psychiatry Physician provider in San Mateo, CA (NPI 1447001102).

Provider details

NPI number: 1447001102
Entity type: Individual
Primary specialty: Psychiatry PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 15634 (CA)

Specialties & taxonomies

Psychiatry PhysicianPrimary2084P0800XLicense 15634 (CA)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(57/100 index)

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

Registry tenure38% of score
2 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

222 W 39th Ave

San Mateo, CA 94403-4364

Phone: (650) 954-0544

Street-level locationGet directions

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Mailing address