Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Brian Thomas Leitzke, PHD

Psychologist in Madison, WI · enumerated 2020.

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

National Provider Identifier

1477179083

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Registry record

Entity type Individual (Type 1)

Name Dr. Brian Thomas Leitzke

Credential PHD

Sex Male

Practice address 600 Highland Avenue, Madison, WI, 53792

Phone (608) 261-1844

Enumeration date Jun 19, 2020

Last updated in NPPES Jun 19, 2020

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

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 Brian Leitzke?

Brian Leitzke is registered in NPPES with the primary taxonomy of Psychologist. 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 2020-06-19.