Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Gay D Trepanier, MD

Individual provider Family Medicine Physician · NPI 1164415709

Gay D Trepanier, MD is a Family Medicine Physician in Fond Du Lac, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2005.

Licensed in
WI
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

481 E Division St Ste 100
Fond Du Lac, WI 54935-3748
Phone: (920) 929-8120
Fax: (920) 929-8126
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Geriatric Medicine (Family Medicine) Physician (primary) Taxonomy 207QG0300X · Licence 16852 (WI)
Family Medicine Physician Taxonomy 207Q00000X · Licence 16852 (WI)

Record details

NPI number1164415709
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2005
Last updated in NPPESSeptember 11, 2025

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