Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Diane Clarke Delehanty, LICSW

Clinical Social Worker in South Boston, MA · enumerated 2013.

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

National Provider Identifier

1851729867

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Registry record

Entity type Individual (Type 1)

Name Diane Clarke Delehanty

Credential LICSW

Sex Female

Practice address South Boston, MA, 02127

Phone (617) 752-1519

Enumeration date Oct 30, 2013

Last updated in NPPES Jul 11, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 122042 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Diane Clarke Delehanty practice?

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

What is the NPI number for Diane Clarke Delehanty?

The National Provider Identifier (NPI) for Diane Clarke Delehanty is 1851729867, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-11.