NPPES file of Aug 9, 2026

Michael B. Karczewski, DDSMS

Prosthodontics · Brookfield, WI

Michael B. Karczewski, DDSMS is a prosthodontics with a practice address in Brookfield, Wisconsin, and NPI 1043357775, issued on Jan 31, 2007. Check the license (Wisconsin 3691, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1043357775
Name
Michael B. Karczewski
Credential
DDSMS
Primary taxonomy
Prosthodontics 1223P0700X
License number
3691 WI
Self-reported in NPPES; status is on the state search
Practice location
13780 W Greenfield Ave, Brookfield, WI 53005
Phone
(262) 782-4860
Enumerated
Jan 31, 2007
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(262) 782-7720
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 13780 W Greenfield Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Carter Benson, DDSGeneral Practice Dentistry1285771840
  2. James Hove, DDSGeneral Practice Dentistry1306983028
  3. Steven Koutnik, D.D.S.General Practice Dentistry1871813923

Verify Michael B. Karczewski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 3691
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

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32% fewer Medicare Part D claims than the average prosthodontics in 2024

61 Medicare Part D claims for 36 beneficiaries, against an average of 90 among the 1,779 providers of this specialty who prescribed in Part D.

  1. Michael Karczewski61
  2. Specialty average90

Most prescribed

  1. Chlorhexidine Gluconate23 claims
  2. Amoxicillin12 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.

Michael B. Karczewski among 67 prosthodontics records in Wisconsin

Michael B. Karczewski, DDSMS is one of 67 prosthodontics records with a practice address in Wisconsin. 45% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.

  • NPI issued2007 · 45% of these records are older, 43% newer
  • In a Medicare fileYes · 45% of these records are
  • In the CMS Doctors and Clinicians fileNo · 3% of these records are
  • Record last updated2007 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Prosthodontics providers in Wisconsin

There are 67 prosthodontics records in Wisconsin.

The 8 prosthodontics records with the nearest ZIP codes

  1. Xi Chen, DMDBrookfield, WI 530051568100881
  2. Charles Kass, DDSBrookfield, WI 530051699159319
  3. Kim Tran Wertz, DDS MSBrookfield, WI 530051710094719
  4. Michael Waliszewski, DDS, MSDBrookfield, WI 530451609913367
  5. Kenneth Waliszewski, DDS MSBrookfield, WI 530451366589012
  6. Michael Kopecky, DDS MSWest Bend, WI 530951023173069
  7. Daniel Roth, DDSWest Bend, WI 530951205863099
  8. Jose Sierra, DDS, MSFranklin, WI 531321386095503

Common questions

What is Michael B. Karczewski, DDSMS's NPI number?

Michael B. Karczewski, DDSMS's National Provider Identifier (NPI) is 1043357775, issued on Jan 31, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Michael B. Karczewski, DDSMS located?

The NPPES record lists a practice address at 13780 W Greenfield Ave, Brookfield, WI, 53005. Phone: (262) 782-4860. Providers update this record themselves, so call before visiting.

How can I verify Michael B. Karczewski, DDSMS's license?

NPPES lists Wisconsin license number 3691, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Michael B. Karczewski, DDSMS prescribe under Medicare Part D?

In 2024, Michael B. Karczewski, DDSMS had 61 Medicare Part D claims for 36 beneficiaries; the average among prosthodontics prescribers was 90. 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.