NPPES file of Aug 9, 2026

Willi R. Niedermeier, M.D.

Orthopaedic Surgery Physician · Prairie Du Sac, WI

Willi R. Niedermeier, M.D. is an orthopaedic surgery physician with a practice address in Prairie Du Sac, Wisconsin, and NPI 1770569725, issued on Dec 21, 2005. Check the license (Wisconsin 20070, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1770569725
Name
Willi R. Niedermeier
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
20070 WI
Self-reported in NPPES; status is on the state search
Practice location
250 26TH St, Prairie Du Sac, WI 53578
Phone
(608) 643-2471
Enumerated
Dec 21, 2005
Record last updated
Oct 29, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(608) 643-4788
Medicaid ID
30542100 WI
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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8 nearest orthopaedic surgery physician records → All 656 in Wisconsin → Look up another NPI →

Also registered at 250 26TH St

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

  1. Henry Dean, M.D.Surgery Physician1316230253
  2. Kristen Hoskins, FNPFamily Nurse Practitioner1346992203
  3. Bryant Kearney, PACSurgical Physician Assistant1366725541
  4. Robert Volk, PAPhysician Assistant1740247402

Verify Willi R. Niedermeier in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 20070    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
Open the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Willi R. Niedermeier among 656 orthopaedic surgery physician records in Wisconsin

Willi R. Niedermeier, M.D. is one of 656 orthopaedic surgery physician records with a practice address in Wisconsin. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 85% newer
  • In a Medicare fileNo · 71% of these records are
  • In the CMS Doctors and Clinicians fileNo · 61% of these records are
  • Record last updated2014 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 orthopaedic surgery physician records list a practice address in Prairie Du Sac

They are 7 of the 156 NPPES records with a practice address in Prairie Du Sac, and 656 orthopaedic surgery physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 656 in Wisconsin → Every provider in Prairie Du Sac → Orthopaedic Surgery Physician nationwide →

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Benjamin Cooper, MDPrairie Du Sac, WI 535781750810560
  2. Andrew Ertl, MDPrairie Du Sac, WI 535781679894943
  3. Matthew Hebert, M.D.Prairie Du Sac, WI 535781912983875
  4. Michael Lamson, M.D.Prairie Du Sac, WI 535781265418115
  5. David Marcu, M.D.Prairie Du Sac, WI 535781588600787
  6. Arnold Rosenthal, M.D.Prairie Du Sac, WI 535781104802156
  7. Thomas Beck, MDRichland Center, WI 535811275534679
  8. Robert Ewart, DORichland Center, WI 535811720669849

Common questions

What is Willi R. Niedermeier, M.D.'s NPI number?

Willi R. Niedermeier, M.D.'s National Provider Identifier (NPI) is 1770569725, issued on Dec 21, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Willi R. Niedermeier, M.D. located?

The NPPES record lists a practice address at 250 26TH St, Prairie Du Sac, WI, 53578. Phone: (608) 643-2471. Providers update this record themselves, so call before visiting.

How can I verify Willi R. Niedermeier, M.D.'s license?

NPPES lists Wisconsin license number 20070, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.