Steven J. Mamerow, M.D.
Internal Medicine Physician · Muskego, WI
Steven J. Mamerow, M.D. is an internal medicine physician with a practice address in Muskego, Wisconsin, and NPI 1194798025, issued on Feb 10, 2006. Check the license (Wisconsin 22448, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Steven J. Mamerow
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 22448 WI
Self-reported in NPPES; status is on the state search - Practice location
- S69 W15636 Janesville Road, Muskego, WI 53150
- Phone
- (262) 928-7000
- Enumerated
- Feb 10, 2006
- Record last updated
- Oct 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (414) 422-2075
- Medicaid ID
- 30380700 WI
- Entity
- Type 1 · individual
Also registered at S69 W15636 Janesville Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Chapman, M.D.Internal Medicine Physician1073586913
- Daniel Cheng, M.D.Internal Medicine Physician1912970781
- Carrie Lapow, APNPPediatric Nurse Practitioner1174596795
Verify Steven J. Mamerow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 22448Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6 internal medicine physician records list a practice address in Muskego
They are 6 of the 192 NPPES records with a practice address in Muskego, and 2,078 internal medicine physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 6 in Muskego → All 2,078 in Wisconsin → Every provider in Muskego →
Other internal medicine physician records in Wisconsin
- Sheetal Aatrai, MDMarshfield, WI1417568965
- Khalid Abdelgadir, MDManitowoc, WI1407433295
- Mesfin Abdissa, MDMilwaukee, WI1376579417
- Anas Abed, MDMadison, WI1659002566
- Margaret Abel, MDRhinelander, WI1477590487
- Mesfin Abera, M.D.Beaver Dam, WI1972852390
- Vidthya Abraham, M.D.Madison, WI1861836058
- Ismael Abu Limon, MDGreenfield, WI1467945543
- Amjed Abu Muhanna, MDMarinette, WI1861514135
- Satish Achanti, MDAppleton, WI1982711198
Common questions
What is Steven J. Mamerow, M.D.'s NPI number?
Steven J. Mamerow, M.D.'s National Provider Identifier (NPI) is 1194798025, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven J. Mamerow, M.D. located?
The NPPES record lists a practice address at S69 W15636 Janesville Road, Muskego, WI, 53150. Phone: (262) 928-7000. Providers update this record themselves, so call before visiting.
How can I verify Steven J. Mamerow, M.D.'s license?
NPPES lists Wisconsin license number 22448, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.