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

Individual provider Hospitalist Physician · NPI 1356906754

Marcus R Sepnafski, MD is a Hospitalist in Weston, Wisconsin. Qualified in 2019, 7 years ago. Practices with Mchs Hospitals Inc, a 1,194-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
7
Licensed in
WI
In the registry since
2019
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

3400 Ministry Pkwy
Weston, WI 54476-5220
Phone: (715) 393-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 50 E Canfield St, Detroit, MI 48201-1804 — (313) 745-4525

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 76812 (WI)

Record details

NPI number1356906754
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 1, 2019
Last updated in NPPESDecember 7, 2022
Certification dateDecember 7, 2022

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice McHs Hospitals Inc — 1194 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 patients154
Services billed 456 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

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. Those with a page here are linked.

  • Marshfield Medical Center - Minocqua Hospital · Minocqua, WI · listed as Mchs Hospitals Inc
  • Marshfield Medical Center Hospital · Marshfield, WI
  • Marshfield Medical Center - Weston Hospital · Weston, WI

Colleagues at Mchs Hospitals Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1194 clinicians in the practice; 12 are shown here.

Other providers in Weston