Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stuart A Kosikowski, OD

Optometrist in Fond Du Lac, WI · enumerated 2005.

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

National Provider Identifier

1831170141

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Registry record

Entity type Individual (Type 1)

Name Stuart A Kosikowski

Credential OD

Sex Male

Practice address 421 Camelot Dr, Fond Du Lac, WI, 54935

Phone (920) 926-8472

Enumeration date Nov 14, 2005

Last updated in NPPES Nov 18, 2020

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2012 (WI) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
WI01J4	Other	WI	JOHN DEERE
12565	Other	WI	DEAN
38525900	Medicaid	WI	-
410029533	Other	WI	RAILROAD MEDICARE
39080723646	Other	WI	UNITY
501574	Other	WV	TOUCHPOINT

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 Stuart Kosikowski practice?

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

What is the NPI number for Stuart Kosikowski?

The National Provider Identifier (NPI) for Stuart Kosikowski is 1831170141, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-18.