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

Deborah J Fenn, LICSW

Q: What is the NPI number for Deborah Fenn?

The National Provider Identifier (NPI) for Deborah Fenn is 1265905210, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in Belmont, MA · enumerated 2019.

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

National Provider Identifier

1265905210

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Registry record

Entity type Individual (Type 1)

Name Deborah J Fenn

Credential LICSW

Sex Female

Practice address Belmont, MA, 02478

Phone (617) 913-0734

Enumeration date Jan 2, 2019

Last updated in NPPES Jan 2, 2019

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

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 1017028LICSW (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

What is the NPI number for Deborah Fenn?

The National Provider Identifier (NPI) for Deborah Fenn is 1265905210, a Type 1 (individual) record in the CMS NPPES registry.

Where does Deborah Fenn practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-02.