Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Weichen Wu

Pharmacist in Walnut, CA · enumerated 2021.

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

National Provider Identifier

1588327373

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Registry record

Entity type Individual (Type 1)

Name Weichen Wu

Sex Male

Practice address 20218 Edgemont Pl, Walnut, CA, 91789

Phone (626) 861-1646

Enumeration date Oct 19, 2021

Last updated in NPPES Oct 19, 2021

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 85365 (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 1588327373 active?

Yes, as of the latest NPPES snapshot, NPI 1588327373 is active (record last updated 2021-10-19).

How do I verify Weichen Wu's NPI record?

Cross-check NPI 1588327373 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-19.