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

Mrs. Alison Birnbaum, LCSW

Clinical Social Worker in New Canaan, CT · enumerated 2009.

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

National Provider Identifier

1992942700

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Registry record

Entity type Individual (Type 1)

Name Mrs. Alison Birnbaum

Credential LCSW

Sex Female

Practice address New Canaan, CT, 06840

Phone (203) 966-9770

Fax (203) 966-2208

Enumeration date Jan 15, 2009

Last updated in NPPES Jan 15, 2009

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 001376 (CT) Primary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 027633 (NY) Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
027633	Other	NY	STATE OF NEW YORK
001376	Other	CT	STATE OF CT

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

How do I verify Alison Birnbaum's NPI record?

Cross-check NPI 1992942700 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1992942700 active?

Yes, as of the latest NPPES snapshot, NPI 1992942700 is active (record last updated 2009-01-15).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-15.