Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian K Konowalchuk

Occupational Medicine Physician in Manitowoc, WI · enumerated 2006.

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

National Provider Identifier

1104939453

Verified

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Registry record

Entity type Individual (Type 1)

Name Brian K Konowalchuk

Sex Male

Practice address 3509 Dewey St, Manitowoc, WI, 54220

Phone (920) 686-5732

Enumeration date Aug 17, 2006

Last updated in NPPES Oct 23, 2023

Taxonomy & licenses

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 49755 (WI) Primary

Other identifiers

Identifier	Type	State	Issuer
178445500	Medicaid	MN	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Brian Konowalchuk practice?

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

What is the NPI number for Brian Konowalchuk?

The National Provider Identifier (NPI) for Brian Konowalchuk is 1104939453, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-23.