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

Sierra Guenther, MSN, FNP

Individual provider Family Medicine Physician · NPI 1316869407

Sierra Guenther, MSN, FNP is a Family Medicine Physician in Appleton, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2026.

Licensed in
WI
In the registry since
2026
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

3925 N Gateway Dr
Appleton, WI 54913-7863
Phone: (920) 205-0279
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence F06261929 (WI)

Record details

NPI number1316869407
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , FNP
Sole proprietorNo
NPI enumeratedJuly 29, 2026
Last updated in NPPESJuly 29, 2026
Certification dateJuly 29, 2026

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