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

Mark Grossklaus, MD

Individual provider Family Medicine Physician · NPI 1255403101

Mark Grossklaus, MD is a Family Practice in Waukesha, Wisconsin. Graduated from University of Wisconsin School of Medicine in 1994, 32 years ago. Practices with Prohealth Medical Group Inc, a 472-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
32
Trained at
University of Wisconsin School of Medicine
Licensed in
WI
In the registry since
2006
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

717 W Moreland Blvd Prohealth Care Medical Associates Moreland Family Medi
Waukesha, WI 53188-2432
Phone: (262) 542-9100
Fax: (262) 542-7366
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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 36936 (WI)

Record details

NPI number1255403101
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 15, 2006
Last updated in NPPESAugust 1, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice Prohealth Medical Group Inc — 472 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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