Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

John N Krupka DDS Sc

Dentist in Kaukauna, WI · enumerated 2016 · authorized official John Krupka, President.

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

National Provider Identifier

1609324896

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Registry record

Entity type Organization (Type 2)

Legal business name John N Krupka DDS Sc

Other name <Unavail>

Practice address 1810 Crooks Ave, Suite 3, Kaukauna, WI, 54130

Phone (920) 766-1122

Enumeration date Sep 15, 2016

Last updated in NPPES Oct 25, 2016

Taxonomy & classification

122300000X Dentist Dental Providers Primary

Authorized official

Name John Krupka

Title President

Phone (920) 766-1122

Other identifiers

Identifier	Type	State	Issuer
7557350001	Other	—	NSC PTAN

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 is John N Krupka DDS Sc located?

The practice location on file with NPPES is in Kaukauna, WI.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-10-25. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-10-25.