Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Simon B Griesbach, MD

Individual provider Family Medicine Physician · NPI 1578839387

Simon B Griesbach, MD is registered under Family Practice in Waukesha, Wisconsin. Graduated from Medical College of Wisconsin in 2013, 13 years ago. Practices with Prohealth Medical Group Inc, a 472-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
13
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2012
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

210 NW Barstow St Ste 201
Waukesha, WI 53188-3771 Not confirmed with CMS for 11 years — call before visiting
Phone: (262) 548-6903
Fax: (262) 548-3820
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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 61212 (WI)

Record details

NPI number1578839387
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 26, 2012
Last updated in NPPESJune 16, 2015

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 2013 (13 years in practice)
Group practice Prohealth Medical Group Inc — 472 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients101
Services billed 297 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Prohealth Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 472 clinicians in the practice; 12 are shown here.

Other providers in Waukesha