Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine F Williamson, NP

Family Nurse Practitioner in Springfield, MA · enumerated 2006.

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

National Provider Identifier

1053406553

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Registry record

Entity type Individual (Type 1)

Name Katherine F Williamson

Credential NP

Sex Female

Practice address 759 Chestnut St, Wg820, Springfield, MA, 01107

Phone (413) 794-5307

Fax (413) 794-8430

Enumeration date Oct 3, 2006

Last updated in NPPES May 20, 2016

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 160370 (MA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

Is NPI 1053406553 active?

Yes, as of the latest NPPES snapshot, NPI 1053406553 is active (record last updated 2016-05-20).

How do I verify Katherine Williamson's NPI record?

Cross-check NPI 1053406553 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 2016-05-20.