Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Grant Kosharek
Dentist in Madison, WI · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1679331151
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Registry record
Entity type Individual (Type 1)
Name Grant Kosharek
Sex Male
Practice address 440 Science Dr Ste 100, Madison, WI, 53711
Phone (608) 308-2950
Enumeration date Mar 11, 2024
Last updated in NPPES Sep 17, 2024
Taxonomy & licenses
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.
Frequently asked questions
Is NPI 1679331151 active?
Yes, as of the latest NPPES snapshot, NPI 1679331151 is active (record last updated 2024-09-17).
How do I verify Grant Kosharek's NPI record?
Cross-check NPI 1679331151 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-17.