Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gene Williams

Counselor in Brewster, NY · enumerated 2021.

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

National Provider Identifier

1558940940

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Registry record

Entity type Individual (Type 1)

Name Gene Williams

Sex Male

Practice address 400 Doansburg Rd, Brewster, NY, 10509

Phone (845) 279-2995

Enumeration date Apr 5, 2021

Last updated in NPPES Apr 5, 2021

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers 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

How do I verify Gene Williams's NPI record?

Cross-check NPI 1558940940 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558940940 active?

Yes, as of the latest NPPES snapshot, NPI 1558940940 is active (record last updated 2021-04-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-05.