Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Loomer, PHARMD.

Pharmacist in Watertown, MA · enumerated 2016.

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

National Provider Identifier

1336596717

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Registry record

Entity type Individual (Type 1)

Name Katherine Loomer

Credential PHARMD.

Sex Female

Practice address 485 Arsenal St, Watertown, MA, 02472

Phone (617) 972-5323

Enumeration date May 16, 2016

Last updated in NPPES May 16, 2016

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License PH232486 (MA) 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

Where does Katherine Loomer practice?

The practice location on file with NPPES is in Watertown, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Katherine Loomer?

The National Provider Identifier (NPI) for Katherine Loomer is 1336596717, 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 2016-05-16.