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

Gregory N Wiersema, MST-CCC/A

Individual provider Audiologist · NPI 1831195361

Gregory N Wiersema, MST-CCC/A is an Audiologist 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

Practice location Address checks out

221 Fond Du Lac Ave
Fond Du Lac, WI 54935-5303
Phone: (920) 923-4678
Fax: (920) 923-4678
Show map & directions

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

Specialties & licences

Audiologist (primary) Taxonomy 231H00000X · Licence 55-156 (WI)
Audiologist-Hearing Aid Fitter Taxonomy 237600000X · Licence 55-156 (WI)

Record details

NPI number1831195361
Entity typeIndividual (Type 1)
GenderMale
Credentials MST-CCC/A
Sole proprietorNo
NPI enumeratedJune 21, 2005
Last updated in NPPESJuly 13, 2026

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