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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Allan C Chang, LAC, DOM, DAOM

Acupuncturist in Walnut, CA · enumerated 2014 · practices at 123 Medical Group Corp..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821415183

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Registry record

Entity type Individual (Type 1)
Name Dr. Allan C Chang
Credential LAC, DOM, DAOM
Sex Male
Practice address Walnut, CA, 91789
Phone (626) 788-9691
Fax (626) 608-0318
Enumeration date Mar 25, 2014
Last updated in NPPES Mar 24, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

146M00000X Intermediate Emergency Medical Technician Emergency Medical Service Providers · License A000150 (CA) Secondary
171100000X Acupuncturist Other Service Providers · License AC 15822 (CA) Primary
LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does Allan Chang practice?
The practice location on file with NPPES is in Walnut, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Allan Chang?
The National Provider Identifier (NPI) for Allan Chang is 1821415183, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-24.