Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Jennifer Alison Dacey, LICSW

Clinical Social Worker in Lexington, MA · enumerated 2011.

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

National Provider Identifier

1063705812

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Registry record

Entity type Individual (Type 1)

Name Ms. Jennifer Alison Dacey

Credential LICSW

Sex Female

Practice address 125 Hartwell Ave, Lexington, MA, 02421

Phone (781) 861-0890

Enumeration date May 25, 2011

Last updated in NPPES Jul 30, 2018

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 118322 (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 specialty is Jennifer Dacey?

Jennifer Dacey is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-30.