Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Weileen T Tan

Pharmacist in Chelmsford, MA · enumerated 2008.

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

National Provider Identifier

1760658454

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Registry record

Entity type Individual (Type 1)

Name Weileen T Tan

Sex Female

Practice address 10 Industrial Ave, Chelmsford, MA, 01824

Phone (978) 244-1300

Enumeration date May 2, 2008

Last updated in NPPES May 2, 2008

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 24924 (MA) 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 Weileen Tan's NPI record?

Cross-check NPI 1760658454 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1760658454 active?

Yes, as of the latest NPPES snapshot, NPI 1760658454 is active (record last updated 2008-05-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-02.