Brett T. Mittelstedt
Internal Medicine Physician · Summit, WI
Brett T. Mittelstedt is an internal medicine physician with a practice address in Summit, Wisconsin, and NPI 1134878903, issued on Mar 21, 2022. Check the license (Wisconsin 81460-21, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Brett T. Mittelstedt
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 81460-21 WI
Self-reported in NPPES; status is on the state search - Practice location
- 36500 Aurora Dr, Summit, WI 53066
- Phone
- (262) 434-1000
- Enumerated
- Mar 21, 2022
- Record last updated
- Aug 11, 2025
- Medicaid ID
- 100334598 WI
- Medicare enrollment
- Enrolled (PECOS I20250818002257); 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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- Steven Andrews, MDEmergency Medicine Physician1649224767
- Karina Arkush, MDNeurology Physician1659690741
Verify Brett T. Mittelstedt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 81460-21Check 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
24 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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).
Brett T. Mittelstedt among 2,078 internal medicine physician records in Wisconsin
Brett T. Mittelstedt 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 Brett T. Mittelstedt's NPI number?
Brett T. Mittelstedt's National Provider Identifier (NPI) is 1134878903, issued on Mar 21, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Brett T. Mittelstedt 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 Brett T. Mittelstedt's license?
NPPES lists Wisconsin license number 81460-21, 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 Brett T. Mittelstedt prescribe under Medicare Part D?
In 2024, Brett T. Mittelstedt had 24 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.