Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Yen Phung, PHARMD

Pharmacist in Fairfield, CA · enumerated 2012.

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

National Provider Identifier

1720336803

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Registry record

Entity type Individual (Type 1)

Name Dr. Yen Phung

Credential PHARMD

Sex Female

Practice address 2401 Waterman Blvd, Fairfield, CA, 94534

Phone (707) 427-5642

Fax (707) 427-5645

Enumeration date Aug 21, 2012

Last updated in NPPES Aug 21, 2012

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 67300 (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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Yen Phung?

Yen Phung is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-21.