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

Roy Vivian Tellis, CASAC

Addiction (Substance Use Disorder) Counselor in Brooklyn, NY · enumerated 2010.

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

National Provider Identifier

1205140035

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Registry record

Entity type Individual (Type 1)

Name Roy Vivian Tellis

Credential CASAC

Sex Male

Practice address Brooklyn, NY, 11223

Phone (866) 569-7233

Fax (718) 336-6815

Enumeration date Aug 4, 2010

Last updated in NPPES Aug 4, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 16918 (NY) 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Roy Tellis?

Roy Tellis is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-04.