Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory James Martens, DDS

General Practice Dentistry in Hudson, WI · enumerated 2026.

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

National Provider Identifier

1073445003

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory James Martens

Credential DDS

Sex Male

Practice address 1003 Pearson Dr, Hudson, WI, 54016

Phone (715) 377-9966

Fax (715) 377-9933

Enumeration date Jun 2, 2026

Last updated in NPPES Jun 2, 2026

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 600220215 (WI) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Gregory Martens practice?

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

What is the NPI number for Gregory Martens?

The National Provider Identifier (NPI) for Gregory Martens is 1073445003, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Michael Bruinooge General Practice Dentistry · Hudson, WI NPI 1427178011 St. Croix Valley Dental, Pllc Point of Service · Hudson, WI NPI 1265618862 Pdg, P.A. Dental Clinic/Center · Hudson, WI NPI 1043649569

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-02.