Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian J Williams, MD

Neurological Surgery Physician in Louisville, KY · enumerated 2008.

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

National Provider Identifier

1548436660

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Registry record

Entity type Individual (Type 1)

Name Brian J Williams

Credential MD

Sex Male

Practice address 220 Abraham Flexner Way Ste 1200, Louisville, KY, 40202

Phone (502) 899-3623

Fax (502) 899-7970

Enumeration date May 8, 2008

Last updated in NPPES Apr 24, 2019

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License Q4340 (TX) Secondary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 49416 (KY) 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
349800801	Medicaid	TX	-
201131680	Medicaid	IN	-
7100408810	Medicaid	KY	-

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

What is the NPI number for Brian Williams?

The National Provider Identifier (NPI) for Brian Williams is 1548436660, a Type 1 (individual) record in the CMS NPPES registry.

Where does Brian Williams practice?

The practice location on file with NPPES is in Louisville, KY. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-24.