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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Thomas Michael Keenan

Pharmacist in Lynn, MA · enumerated 2011 · practices at Walgreen Co.

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

National Provider Identifier

1740563147

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Registry record

Entity type Individual (Type 1)
Name Mr. Thomas Michael Keenan
Sex Male
Practice address 21 Joyce St, Lynn, MA, 01902
Phone (781) 593-1070
Enumeration date Sep 21, 2011
Last updated in NPPES Sep 21, 2011

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 16277 (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

Where does Thomas Keenan practice?
The practice location on file with NPPES is in Lynn, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Thomas Keenan?
The National Provider Identifier (NPI) for Thomas Keenan is 1740563147, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-21.