Ethan Rosen
Internal Medicine Physician · Summit, WI
Ethan Rosen is an internal medicine physician with a practice address in Summit, Wisconsin, and NPI 1427799543, issued on Apr 5, 2022. Check the license (Wisconsin 83425-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Ethan Rosen
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 83425-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 36500 Aurora Dr, Summit, WI 53066
- Phone
- (262) 434-1000
- Enumerated
- Apr 5, 2022
- Record last updated
- Sep 10, 2025
- Medicaid ID
- 100222737 WI
- Medicare enrollment
- Enrolled (PECOS I20250703001577); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 36500 Aurora Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tulay Aksoy, MDInternal Medicine Physician1245485697
- Inna Allen, M.D.Family Medicine Physician1649581315
- Benjamin Andrew, M.D.Surgery Physician1083000863
- Steven Andrews, MDEmergency Medicine Physician1649224767
- Karina Arkush, MDNeurology Physician1659690741
Verify Ethan Rosen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 83425-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
27 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl12 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.
Bills Medicare through one group practice
- Aurora Medical Group, Inc.Summit, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ethan Rosen among 2,078 internal medicine physician records in Wisconsin
Ethan Rosen is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 89% of them.
- NPI issued2022 · 89% of these records are older, 8% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2022 · median 2002 among the 1,098 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 internal medicine physician records list a practice address in Summit
They are 7 of the 250 NPPES records with a practice address in Summit, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Summit → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tulay Aksoy, MDSummit, WI 530661245485697
- Brenda Boschek, M.D.Oconomowoc, WI 530661154393833
- Julius BreyerOconomowoc, WI 530661760621809
- Dan Cleary, MDOconomowoc, WI 530661972615136
- Eric Conradson, M.D.Oconomowoc, WI 530661518976232
- William Cooper, MDOconomowoc, WI 530661023078037
- Pravin Gupta, M.D.Summit, WI 530661124132188
- Brett Linzer, M.D.Oconomowoc, WI 530661083686653
Common questions
What is Ethan Rosen's NPI number?
Ethan Rosen's National Provider Identifier (NPI) is 1427799543, issued on Apr 5, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Ethan Rosen located?
The NPPES record lists a practice address at 36500 Aurora Dr, Summit, WI, 53066. Phone: (262) 434-1000. Providers update this record themselves, so call before visiting.
How can I verify Ethan Rosen's license?
NPPES lists Wisconsin license number 83425-20, 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 Ethan Rosen prescribe under Medicare Part D?
In 2024, Ethan Rosen had 27 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.