Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary-Thanh Phung

Pharmacist in Milpitas, CA · enumerated 2015.

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

National Provider Identifier

1871970889

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Registry record

Entity type Individual (Type 1)

Name Mary-Thanh Phung

Sex Female

Practice address 301 Ranch Dr, Milpitas, CA, 95035

Phone (408) 934-0304

Enumeration date Apr 28, 2015

Last updated in NPPES Apr 28, 2015

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 72348 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1871970889 active?

Yes, as of the latest NPPES snapshot, NPI 1871970889 is active (record last updated 2015-04-28).

How do I verify Mary-Thanh Phung's NPI record?

Cross-check NPI 1871970889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-28.