NPI Portal NPI Lookup & Verification

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

Mr. Robert A. Hamilton III, LCSW

Clinical Social Worker in Jamaica, NY · enumerated 2016.

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

National Provider Identifier

1326405580

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Registry record

Entity type Individual (Type 1)
Name Mr. Robert A. Hamilton III
Credential LCSW
Sex Male
Practice address Jamaica, NY, 11432
Phone (718) 896-2500
Fax (718) 459-6542
Enumeration date Jan 19, 2016
Last updated in NPPES Nov 15, 2021

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 090621 (NY) Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 086777 (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.

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Frequently asked questions

How do I verify Robert Hamilton's NPI record?
Cross-check NPI 1326405580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1326405580 active?
Yes, as of the latest NPPES snapshot, NPI 1326405580 is active (record last updated 2021-11-15).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-15.