NPI Portal NPI Lookup & Verification

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

Robert Clayton Vanzant, MS

Clinical Social Worker in Seminole, OK · enumerated 2007.

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

National Provider Identifier

1437360179

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Registry record

Entity type Individual (Type 1)
Name Robert Clayton Vanzant
Credential MS
Sex Male
Practice address Seminole, OK, 74868
Phone (405) 382-5438
Enumeration date May 24, 2007
Last updated in NPPES May 3, 2023

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

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License UNDER SUPERVISION Secondary
171M00000X Case Manager/Care Coordinator Other Service Providers · License 311838 (OK) Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 8572-P (OK) Primary
251B00000X Case Management Agency Agencies Secondary

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 Robert Vanzant?
Robert Vanzant is registered in NPPES with the primary taxonomy of Clinical Social Worker. 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 2023-05-03.