Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Abigail Nathanson, LCSW

Clinical Social Worker in New York, NY · enumerated 2008.

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

National Provider Identifier

1417113820

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Registry record

Entity type Individual (Type 1)

Name Ms. Abigail Nathanson

Credential LCSW

Sex Female

Practice address 39 Broadway, Suite 200, Attention: Sw Department, New York, NY, 10006

Phone (347) 831-0267

Enumeration date Aug 5, 2008

Last updated in NPPES Apr 25, 2013

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 078365 (NY) Primary

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

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 Abigail Nathanson's NPI record?

Cross-check NPI 1417113820 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1417113820 active?

Yes, as of the latest NPPES snapshot, NPI 1417113820 is active (record last updated 2013-04-25).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-25.