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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gary John Madison, D.D.S.

General Practice Dentistry in Duluth, MN · enumerated 2006.

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

National Provider Identifier

1497843361

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Registry record

Entity type Individual (Type 1)
Name Dr. Gary John Madison
Credential D.D.S.
Sex Male
Practice address 324 W Superior St, Suite 700, Duluth, MN, 55802
Phone (218) 722-7831
Fax (218) 625-5550
Enumeration date Oct 10, 2006
Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License D10521 (MN) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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

Is NPI 1497843361 active?
Yes, as of the latest NPPES snapshot, NPI 1497843361 is active (record last updated 2007-07-09).
How do I verify Gary Madison's NPI record?
Cross-check NPI 1497843361 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.