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

Dr. Chen I Chen, PHARM.D.

Q: What is the NPI number for Chen Chen?

The National Provider Identifier (NPI) for Chen Chen is 1609012129, a Type 1 (individual) record in the CMS NPPES registry.

Geriatric Pharmacist in San Marino, CA · enumerated 2009.

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

National Provider Identifier

1609012129

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Registry record

Entity type Individual (Type 1)

Name Dr. Chen I Chen

Credential PHARM.D.

Sex Male

Practice address San Marino, CA, 91108

Phone (626) 309-9899

Enumeration date Jan 6, 2009

Last updated in NPPES Jan 6, 2009

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

Taxonomy & licenses

1835G0303X Geriatric Pharmacist Pharmacy Service Providers · License 61539 (CA) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Chen Chen practice?

The practice location on file with NPPES is in San Marino, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Chen Chen?

The National Provider Identifier (NPI) for Chen Chen is 1609012129, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-06.