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Mrs. Nancy Larkin Williamson, M.ED. CCC/SLP

Speech-Language Pathologist in Dedham, MA · enumerated 2009 · practices at Entertaining Diversity, Inc..

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

National Provider Identifier

1790014736

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Registry record

Entity type Individual (Type 1)
Name Mrs. Nancy Larkin Williamson
Credential M.ED. CCC/SLP
Sex Female
Practice address 597 High St, Dedham, MA, 02026
Phone (781) 329-2262
Fax (781) 329-2207
Enumeration date Dec 22, 2009
Last updated in NPPES Dec 22, 2009

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 1543 (MA) Primary
SLP · Speech-Language Pathologist: A licensed clinician treating speech, language, and swallowing disorders. About the SLP 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.

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Frequently asked questions

How do I verify Nancy Williamson's NPI record?
Cross-check NPI 1790014736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1790014736 active?
Yes, as of the latest NPPES snapshot, NPI 1790014736 is active (record last updated 2009-12-22).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-22.