Michael John Rentzepis, MD
Urology Physician · Eau Claire, WI
Michael John Rentzepis, MD is a urology physician with a practice address in Eau Claire, Wisconsin, and NPI 1184603037, issued on Jan 10, 2006. Check the license (Wisconsin 39683, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Michael John Rentzepis
- Credential
- MD
- Primary taxonomy
- Urology Physician 208800000X
- License number
- 39683 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1400 Bellinger St, Eau Claire, WI 54703
- Phone
- (715) 838-5222
- Enumerated
- Jan 10, 2006
- Record last updated
- Sep 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040802000417); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1400 Bellinger St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ajit Abraham, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1487899936
- Gina Adel, MDRheumatology Physician1841231727
- Adeniyi Adenote, PT, DPTPhysical Therapist1114564333
- Kirsten Aexel Handley, CNMAdvanced Practice Midwife1952523078
- Andrea Aguayo, PHARMDPharmacist1003507492
- Boshra Al Ibraheem, MDFamily Medicine Physician1376399444
Verify Michael John Rentzepis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 39683Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average urology physician in 2024
875 Medicare Part D claims for 267 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims. 59 claims were for opioids.
Most prescribed
- Tamsulosin Hcl280 claims
- Finasteride137 claims
- Ciprofloxacin Hcl49 claims
- Nitrofurantoin Mono-Macro40 claims
- Tramadol Hcl40 claims
- Cefdinir39 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
- Mayo Clinic Health System-Northwest Wisconsin Region IncEau Claire, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Urology Physician providers in Wisconsin
There are 259 urology physician records in Wisconsin.
Other urology physician records in Wisconsin
- Edwin Abel, M.D.Madison, WI1083800510
- Jose Agudelo Bodington, MDMadison, WI1497544654
- Bahareh Alavi-Dunn, MDGreen Bay, WI1447783501
- Gregory Anderson, MDMarshfield, WI1134234610
- Matthew Anderson, M.D.Oshkosh, WI1083674212
- Michelle Andrew, MDMenomonee Falls, WI1992793327
- William Annesley, MDWauwatosa, WI1407899552
- Ali Antar, M.D.Madison, WI1770010340
- Omar Atassi, M.D.Neenah, WI1154380046
- Jon Auger, MDWaukesha, WI1225071475
Common questions
What is Michael John Rentzepis, MD's NPI number?
Michael John Rentzepis, MD's National Provider Identifier (NPI) is 1184603037, issued on Jan 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael John Rentzepis, MD located?
The NPPES record lists a practice address at 1400 Bellinger St, Eau Claire, WI, 54703. Phone: (715) 838-5222. Providers update this record themselves, so call before visiting.
How can I verify Michael John Rentzepis, MD's license?
NPPES lists Wisconsin license number 39683, 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 Michael John Rentzepis, MD prescribe under Medicare Part D?
In 2024, Michael John Rentzepis, MD had 875 Medicare Part D claims for 267 beneficiaries; the average among urology physician prescribers was 1,340. 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.