Marcus R. Sepnafski, MD
Hospitalist Physician · Weston, WI
Marcus R. Sepnafski, MD is a hospitalist physician with a practice address in Weston, Wisconsin, and NPI 1356906754, issued on May 1, 2019. Check the license (Wisconsin 76812, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Marcus R. Sepnafski
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 76812 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Ministry Pkwy, Weston, WI 54476
- Phone
- (715) 393-1000
- Enumerated
- May 1, 2019
- Record last updated
- Dec 7, 2022
- Medicare enrollment
- Enrolled (PECOS I20220601000645); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 894 in Wisconsin → Look up another NPI →
Also registered at 3400 Ministry Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohamed Fouzi Abdul Hameed, M.D.Hospitalist Physician1255590899
- Olusolape Adegbehingbe, M.DHospitalist Physician1679756977
- Melissa Aebly, MDAnesthesiology Physician1811152739
- Tricia Andrews, PT, DPTPhysical Therapist1780492926
- Emily Bartig, PA-CPhysician Assistant1558066977
- Ryan Bemke, M.D.Clinical Pathology/Laboratory Medicine Physician1295182350
Verify Marcus R. Sepnafski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 76812Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average hospitalist physician in 2024
377 Medicare Part D claims for 101 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Furosemide27 claims
- Venlafaxine Hcl25 claims
- Amlodipine Besylate20 claims
- Lisinopril20 claims
- Losartan Potassium17 claims
- Atorvastatin Calcium15 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $57.50
1 payment: food and beverage; the largest payer was Abiomed. The 7,324 providers of this specialty with any payment received $494.84 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Mchs Hospitals IncMarshfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcus R. Sepnafski among 894 hospitalist physician records in Wisconsin
Marcus R. Sepnafski, MD is one of 894 hospitalist physician records with a practice address in Wisconsin. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 74% of them.
- NPI issued2019 · 74% of these records are older, 20% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated2019 · median 2011 among the 768 with a school on file
- Record last updated2022 · 29% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 hospitalist physician records list a practice address in Weston
They are 15 of the 368 NPPES records with a practice address in Weston, and 894 hospitalist physician records in Wisconsin.
All 894 in Wisconsin → Every provider in Weston → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Mohamed Fouzi Abdul Hameed, M.D.Weston, WI 544761255590899
- Olusolape Adegbehingbe, M.DWeston, WI 544761679756977
- Keshani Bhushan, M.DWeston, WI 544761124250790
- Nath Chongsuwat, M.D.Weston, WI 544761225416829
- Ryan Gossett, MDWeston, WI 544761710924329
- Gregory Grzesik, D.O.Weston, WI 544761316389372
- Myung Sun Jung, M.D.Weston, WI 544761477791895
- Samantha Klebe, DOWeston, WI 544761649538844
Common questions
What is Marcus R. Sepnafski, MD's NPI number?
Marcus R. Sepnafski, MD's National Provider Identifier (NPI) is 1356906754, issued on May 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marcus R. Sepnafski, MD located?
The NPPES record lists a practice address at 3400 Ministry Pkwy, Weston, WI, 54476. Phone: (715) 393-1000. Providers update this record themselves, so call before visiting.
How can I verify Marcus R. Sepnafski, MD's license?
NPPES lists Wisconsin license number 76812, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marcus R. Sepnafski, MD prescribe under Medicare Part D?
In 2024, Marcus R. Sepnafski, MD had 377 Medicare Part D claims for 101 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Marcus R. Sepnafski, MD's MIPS final score?
The 2023 MIPS final score is 78.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.