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

Individual provider Mental Health Counselor · NPI 1932340437

Mr. John Claus Marxen, LPC is a Mental Health Counselor in Oshkosh, Wisconsin. Practices as a sole proprietor. Licensed in Wisconsin.

Licensed in
WI
In the registry since
2009
What do these letters mean?
LPC — Licensed Professional Counselor
A licensed mental health counsellor.

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Practice location Address checks out

3126 W 20th Ave
Oshkosh, WI 54904-9258
Phone: (920) 279-6001
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence 3020-125 (WI)

Record details

NPI number1932340437
Entity typeIndividual (Type 1)
GenderMale
Credentials LPC
Sole proprietorYes
NPI enumeratedMarch 12, 2009
Last updated in NPPESMarch 12, 2009

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