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Clarence Willaims V

Addiction (Substance Use Disorder) Counselor in Commack, NY · enumerated 2007.

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

National Provider Identifier

1538389267

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Registry record

Entity type Individual (Type 1)
Name Clarence Willaims V
Sex Male
Practice address 155 Indian Head Rd, Commack, NY, 11725
Phone (631) 543-6200
Enumeration date Apr 26, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier Type State Issuer
02249145 Medicaid NY -

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

Where does Clarence Willaims practice?
The practice location on file with NPPES is in Commack, NY. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Clarence Willaims?
The National Provider Identifier (NPI) for Clarence Willaims is 1538389267, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.