Steven Koprowski, M.D.
Gastroenterology Physician · Germantown, WI
Steven Koprowski, M.D. is a gastroenterology physician with a practice address in Germantown, Wisconsin, and NPI 1457883787, issued on Mar 27, 2017. Check the license (Wisconsin 81584-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Steven Koprowski
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 81584-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- W180N11070 River LN, Germantown, WI 53022
- Phone
- (262) 535-8400
- Enumerated
- Mar 27, 2017
- Record last updated
- Sep 13, 2023
- Fax
- (262) 532-9701
- Medicaid ID
- 100247575 WI
- Medicare enrollment
- Enrolled (PECOS I20230830002427); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2017
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 340 in Wisconsin → Look up another NPI →
Also registered at W180N11070 River LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jacob Adashek, DOHematology & Oncology Physician1144780107
- Katie CohenCardiovascular Disease Physician1366975179
- Kelly Cole, PA-CPhysician Assistant1700556818
- Shaunta Ford-Pierce, NPFamily Nurse Practitioner1619387511
- Timothy Goggins, M.D.Hematology & Oncology Physician1497890701
- Mark KaepplerCardiovascular Disease Physician1104184100
Verify Steven Koprowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 81584-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average gastroenterology physician in 2024
743 Medicare Part D claims for 525 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Peg 3350-Electrolyte447 claims
- Pantoprazole Sodium79 claims
- Omeprazole69 claims
- Sod Sulf-Potass Sulf-Mag Sulf24 claims
- Mesalamine17 claims
- Gavilyte-N11 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.
Industry payments in 2024: $271.09
2 payments; by number, the most common kind was food and beverage; the largest payer was Procept BioRobotics Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Aurora Advanced Healthcare, Inc.Germantown, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Steven Koprowski among 340 gastroenterology physician records in Wisconsin
Steven Koprowski, M.D. is one of 340 gastroenterology physician records with a practice address in Wisconsin. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 89% of them.
- NPI issued2017 · 89% of these records are older, 10% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2017 · median 2003 among the 239 with a school on file
- Record last updated2023 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Wisconsin
There are 340 gastroenterology physician records in Wisconsin.
All 340 in Wisconsin → Every provider in Germantown → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Harjot Sidhu, MDGrafton, WI 530241902885924
- Nadia HuqHartford, WI 530271487073862
- Saba Farooq, MDBrookfield, WI 530051669769824
- Melissa Earnest, M.D.Menomonee Falls, WI 530511023154903
- Peter Eichenseer, M.D.Menomonee Falls, WI 530511821289141
- Dana LeyMenomonee Falls, WI 530511215433735
- Shaibal Mazumdar, M.D.Menomonee Falls, WI 530511093749566
- Syed Mehdi, M.D.Menomonee Falls, WI 530511518931138
Common questions
What is Steven Koprowski, M.D.'s NPI number?
Steven Koprowski, M.D.'s National Provider Identifier (NPI) is 1457883787, issued on Mar 27, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Steven Koprowski, M.D. located?
The NPPES record lists a practice address at W180N11070 River LN, Germantown, WI, 53022. Phone: (262) 535-8400. Providers update this record themselves, so call before visiting.
How can I verify Steven Koprowski, M.D.'s license?
NPPES lists Wisconsin license number 81584-20, 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 Steven Koprowski, M.D. prescribe under Medicare Part D?
In 2024, Steven Koprowski, M.D. had 743 Medicare Part D claims for 525 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.