Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Andrew Steven Chen

Internal Medicine Physician in Fontana, CA · enumerated 2019 · practices at Andrew S. Chen, M.D., Inc..

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

National Provider Identifier

1053873646

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Registry record

Entity type Individual (Type 1)

Name Andrew Steven Chen

Sex Male

Practice address 14050 Cherry Ave Ste C, Fontana, CA, 92337

Phone (909) 823-5220

Enumeration date Apr 2, 2019

Last updated in NPPES Mar 15, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A182957 (CA) Primary

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

How do I verify Andrew Chen's NPI record?

Cross-check NPI 1053873646 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1053873646 active?

Yes, as of the latest NPPES snapshot, NPI 1053873646 is active (record last updated 2023-03-15).

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Andrew S. Chen, M.D., Inc. Internal Medicine Physician · Fontana, CA NPI 1194592923

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-15.