Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Vivian G Hasbrook, M.D.

Psychiatry Physician in Norman, OK · enumerated 2006.

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

National Provider Identifier

1225101215

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Registry record

Entity type Individual (Type 1)

Name Vivian G Hasbrook

Credential M.D.

Sex Female

Practice address 900 E Main St, Bldg. 100, Norman, OK, 73071

Phone (405) 307-4800

Fax (405) 307-4865

Enumeration date Nov 16, 2006

Last updated in NPPES Dec 14, 2010

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 18945 (OK) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
100205270A	Medicaid	OK	-

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 Vivian Hasbrook?

Vivian Hasbrook is registered in NPPES with the primary taxonomy of Psychiatry Physician. 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 2010-12-14.