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

Mr. Lamar B Henderson, MSW, LICSW

Clinical Social Worker in Washington, DC · enumerated 2010.

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

National Provider Identifier

1831421874

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Registry record

Entity type Individual (Type 1)

Name Mr. Lamar B Henderson

Credential MSW, LICSW

Sex Male

Practice address Washington, DC, 20005

Phone (202) 434-8700

Enumeration date Feb 1, 2010

Last updated in NPPES Feb 1, 2010

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 LC50078318 (DC) Primary

Other identifiers

Identifier	Type	State	Issuer
LC50078318	Other	DC	HEALTH PROFESSIONAL LICENSING ADMINISTRATION BOARD OF SOCIAL WORK

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.

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Frequently asked questions

How do I verify Lamar Henderson's NPI record?

Cross-check NPI 1831421874 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1831421874 active?

Yes, as of the latest NPPES snapshot, NPI 1831421874 is active (record last updated 2010-02-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-01.