Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dianne Walsh

Clinical Social Worker in Lancaster, MA · enumerated 2007 · practices at Perkins School.

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

National Provider Identifier

1780899682

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Registry record

Entity type Individual (Type 1)

Name Dianne Walsh

Sex Female

Practice address 1121 Main St, Lancaster, MA, 01523

Phone (978) 368-6442

Enumeration date May 14, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 2021650 (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 Dianne Walsh's NPI record?

Cross-check NPI 1780899682 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1780899682 active?

Yes, as of the latest NPPES snapshot, NPI 1780899682 is active (record last updated 2007-07-08).

Other providers at this practice address

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Perkins School Clinical Social Worker · Lancaster, MA NPI 1053527861

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.