NPPES file of Aug 9, 2026

Emergency Medicine Physician in Wisconsin

1,464 NPPES records list emergency medicine physician with a practice address in Wisconsin, 25 per 100,000 residents, the 16th highest rate of 51. Milwaukee and Madison have the most; each record links to the provider's NPI and the Wisconsin license search. Page 19 of 30.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207P00000X · method

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

Milwaukee has the most, 358

  1. Milwaukee358
  2. Madison241
  3. La Crosse72
  4. Eau Claire66
  5. Janesville40

Emergency Medicine Physician records in Wisconsin

  1. John Moustoukas, M.D.Manitowoc, WI 542201124317847
  2. Ngassa Mssika, DOOshkosh, WI 549041932410461
  3. Kristen Mueller, MDMadison, WI 537921497076798
  4. Aaron Muesch, MDMadison, WI 537051780326793
  5. Steven Muhle, M.D.Weston, WI 544761174561195
  6. Jamie Mullin, MDCudahy, WI 531101205912649
  7. Dean Munnell, MDMinocqua, WI 545481275614943
  8. Ian Munro, M.D.Milwaukee, WI 532021134153679
  9. James Murphy, MDManitowoc, WI 542201588643324
  10. Matthew Murphy, MDSheboygan, WI 530811932725686
  11. Matthew Murphy, MDFond Du Lac, WI 549351174044960
  12. Ryan Murphy, MDGreen Bay, WI 543111073782637
  13. Michelle Nadrchal, MDHudson, WI 540161588309850
  14. Maxwell Nanes, DOWauwatosa, WI 532131811263346
  15. Emma Nash, M.D.Milwaukee, WI 532151578911228
  16. Marcie Navratil, MDStevens Point, WI 544811942472030
  17. Hemant Nayak, MDMilwaukee, WI 532151720118490
  18. Ali Nazerali, MDRice Lake, WI 548681851928543
  19. Eric Neasi, MDMadison, WI 537051053872044
  20. James Neitzel, M.D.Rice Lake, WI 548681861843344
  21. Drew Nelson, M.D.Eau Claire, WI 547031548559271
  22. Gregory Nelson, MDSummit, WI 530661841299385
  23. Laura Nelson, DOEau Claire, WI 547031699094052
  24. Matthew Nelson, D.O.Waupaca, WI 549811720030422
  25. Todd Nelson, M.D.Manitowoc, WI 542201144333501
  26. Ayman Nemr, M.D.Tomah, WI 546601780976787
  27. Matthew Nerland, DOBurlington, WI 531051396782579
  28. Jonathan Neubert, DOEau Claire, WI 547031407207749
  29. Lawrence Neuman, MDJanesville, WI 535481720374762
  30. Tonya Neumann, M.D.Beaver Dam, WI 539161477993137
  31. Ryan Newberry, D.O.Madison, WI 537921467897439
  32. Karl Nibbelink, MDJanesville, WI 535481093994121
  33. Shay Nicholas, M.D.Green Bay, WI 543011700869526
  34. Jeffrey Nichols, DOJanesville, WI 535481316334683
  35. Adam Nicholson, M.D.Madison, WI 537921164802138
  36. Thomas Nielsen, MDWausau, WI 544011982765806
  37. Anthony Niezyniecki, M.D.Milwaukee, WI 532021104864842
  38. Sean Nolan, D.O.Wauwatosa, WI 532131598824468
  39. Christine NolenWaukesha, WI 531881952677940
  40. Michael Nord, D.O.Milwaukee, WI 532151639435381
  41. Rachel NordstromMilwaukee, WI 532261285163931
  42. Sara Northway, M.D.Milwaukee, WI 532261609995893
  43. Dorothy Novak, M.D.Hayward, WI 548431215904412
  44. Christina Nussbaum, M.D.Waupaca, WI 549811518387885
  45. Christopher Nussbaum, MDMilwaukee, WI 532151174639603
  46. Claire O'BrienMilwaukee, WI 532151093134884
  47. Shawn O'Brien, M.D.Madison, WI 537151376526541
  48. Guy O'Connor, M.D.Manitowoc, WI 542201144333519
  49. Matthew O'Connor, MDMadison, WI 537921306236013
  50. Lera O'Sullivan, MDMadison, WI 537921245082866

Source: CMS NPPES, primary taxonomy 207P00000X: records by practice city and the list of records, file of Aug 9, 2026.

Wisconsin ranks 16 of 51 per resident

  1. Ohio25
  2. New Hampshire25
  3. Alaska25
  4. Wisconsin25
  5. New Mexico24
  6. Colorado24
  7. 50 states and D.C.21

Source: CMS NPPES, primary taxonomy 207P00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.2% of these records appear in a Medicare file, against 81.5% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Wisconsin79.2%
  2. United States81.5%

Emergency Medicine Physician records in Wisconsin, measured

  • In a Medicare file1,159 of 1,464 · 79.2% here, 81.5% nationally
  • In the CMS Doctors and Clinicians file845 · 57.7% here, 58.7% nationally
  • Not updated in five years or more725 · 49.5% here, 54.8% nationally
  • Median graduation year2011 · the 844 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207P00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,464 NPPES records list emergency medicine physician (207P00000X) as their primary taxonomy with a practice address in Wisconsin: 25 per 100,000 residents against 21 nationally (50 states and D.C.). Milwaukee has 358 of them (24%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Washington1,459
  2. Arizona1,494
  3. Colorado1,434
  4. Missouri1,405

States with a similar rate per 100,000

  1. Alaska25.0
  2. New Hampshire25.0
  3. New Mexico24.5
  4. Ohio25.5

The largest states

  1. California7,751
  2. New York5,025
  3. Texas4,885
  4. Florida4,034
  5. Pennsylvania3,911

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record 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.