Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian P Williams, MD

Pediatrics Physician in Mankato, MN · enumerated 2006.

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

National Provider Identifier

1578542494

Verified

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Registry record

Entity type Individual (Type 1)

Name Brian P Williams

Credential MD

Sex Male

Practice address 1230 E Main St, Mankato Clinic @ Main Street, Mankato, MN, 56002

Phone (507) 625-1811

Enumeration date Jan 10, 2006

Last updated in NPPES Jul 15, 2020

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 46643 (MN) 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
1202900	Other	MN	MEDICA
874620600	Medicaid	MN	-
HP42383	Other	MN	HEALTH PARTNERS
NA2951041222	Other	MN	PREFERRED ONE
513R8WI	Other	MN	BCBS
2361648	Other	MN	AMERICAS PPO
410849339 56001 C211	Other	-	CHAMPUS
1203326	Other	MN	MEDICA
0593087	Medicaid	IA	-
131477	Other	MN	UCARE

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 specialty is Brian Williams?

Brian Williams is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-15.