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

Mark W Niedfeldt, MD, LLC

Organization Family Medicine Physician · NPI 1174764906

Mark W Niedfeldt, MD, LLC is a Family Medicine Physician in Mequon, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2009.

Licensed in
WI
In the registry since
2009
Specialties on file
2
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

10556 N Port Washington Rd Ste 101
Mequon, WI 53092-5586
Phone: (262) 643-4720
Fax: (262) 643-4721
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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 35201 (WI)
Sports Medicine (Family Medicine) Physician Taxonomy 207QS0010X · Licence 35201 (WI)

Record details

NPI number1174764906
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Niedfeldt — Owner · (262) 643-4720
NPI enumeratedMarch 6, 2009
Last updated in NPPESMarch 6, 2009
Mailing address10556 N Port Washington Rd, Suite 101, Mequon, WI 53092-5586

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