NPPES file of Aug 9, 2026

Occupational Therapy Assistant in Wisconsin

1,460 NPPES records list occupational therapy assistant with a practice address in Wisconsin, 25 per 100,000 residents, the 2nd highest rate of 51. Milwaukee and Madison have the most; each record links to the provider's NPI and the Wisconsin license search. Page 16 of 30.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 224Z00000X · 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, 101

  1. Milwaukee101
  2. Madison78
  3. Appleton61
  4. Green Bay39
  5. Fitchburg38

Occupational Therapy Assistant records in Wisconsin

  1. Karmen MaagEvansville, WI 535361730605247
  2. Stephanie Macomber, C.O.T.A.Chippewa Falls, WI 547291912116591
  3. Melani Madero, OCCUPATIONAL THERPYLa Crosse, WI 546011437350568
  4. Rhonda Madigan, COTAPark Falls, WI 545521801059035
  5. Corinne Maerzke, COTAKenosha, WI 531441114149069
  6. Abbey Makens, COTASaint Croix Falls, WI 540241124514559
  7. Amanda Mansfield, OTAAppleton, WI 549151700401429
  8. Kathryn Mantz, COTAGreenfield, WI 532201356514558
  9. Bethany Marceau, COTAWisconsin Rapids, WI 544941770749699
  10. Teagan Marcouiller, COTAWyocena, WI 539691194697714
  11. Lori Marg, COTAMilwaukee, WI 532251265982367
  12. Patricia Marohl, COTAAppleton, WI 549111790821155
  13. Diane Marotz, COTASheboygan, WI 530811003125683
  14. Mercedes MarreroKewaunee, WI 542161265199863
  15. Kalin Marshall, COTA/LReedsburg, WI 539591912885591
  16. Kelly MartelloMerrill, WI 544521700370293
  17. Kimberly MartensMadison, WI 537921184904542
  18. Brianna Martin, COTA/LWaukesha, WI 531881477161776
  19. Bruce Martin, COJAMilwaukee, WI 532161942318092
  20. Cindy Martin, COTAPark Falls, WI 545521477729879
  21. Erin Martin, COTAKenosha, WI 531421619463486
  22. Krista Martin, COTALake Geneva, WI 531471699025114
  23. Nicole Martin, COTAMilwaukee, WI 532191629290945
  24. Noelle Martin, COTAOconomowoc, WI 530661649809906
  25. Susan Martin, COTANeenah, WI 549561992075758
  26. Amy MartzahlDe Pere, WI 541151578026126
  27. Mackenzie Martzahl, COTANew London, WI 549611578343166
  28. Kathryn Marucha, COTAHayward, WI 548431255258828
  29. Marissa MasonBrookfield, WI 530451295619005
  30. Ann Mastrostefano, COTAKenosha, WI 531441346648276
  31. Caroline Matlock, COTASheboygan, WI 530811790140184
  32. Kathryn Matson, COTAMonroe, WI 535661194093013
  33. Jessica Mattheis, COTAWisconsin Rapids, WI 544941972982767
  34. Christine Matthias, COTASherwood, WI 541691578606208
  35. Danielle Matuszak, COTABlair, WI 546161154830818
  36. Leslie Matz, COTAKaukauna, WI 541301093955080
  37. Sherry Maurer, COTAManitowoc, WI 542201194008177
  38. Olivia Maxinoski, COTAViroqua, WI 546651386253813
  39. Eric MayCedar Grove, WI 530131396256434
  40. Jodi Mc Sherry, COTALa Crosse, WI 546011275695348
  41. Sherri McCabe, COTAWausau, WI 544031831427764
  42. Amy McCarthy, OTABlack River Falls, WI 546151487065231
  43. Amy McCaw, COTAMadison, WI 537161538347281
  44. Elizabeth McClellandViroqua, WI 546651649533217
  45. Mary Anne McCormickAppleton, WI 549151457528705
  46. Krista McDuffee, OTAAppleton, WI 549111558708438
  47. Leslie McGlin, COTAPeshtigo, WI 541571417489436
  48. Jamie McGuire, COTAGreenfield, WI 532201528365764
  49. Darcy McMurtaghCedarburg, WI 530121134759129
  50. Ali Meinburg, OTAColfax, WI 547301770827396

Source: CMS NPPES, primary taxonomy 224Z00000X: records by practice city and the list of records, file of Aug 9, 2026.

Wisconsin ranks 2 of 51 per resident

  1. Arkansas35
  2. Wisconsin25
  3. Oklahoma23
  4. Delaware23
  5. 50 states and D.C.12

Source: CMS NPPES, primary taxonomy 224Z00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

0.1% of these records appear in a Medicare file, against 0.1% 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. Wisconsin0.1%
  2. United States0.1%

Occupational Therapy Assistant records in Wisconsin, measured

  • In a Medicare file2 of 1,460 · 0.1% here, 0.1% nationally
  • In the CMS Doctors and Clinicians file3 · 0.2% here, 0.1% nationally
  • Not updated in five years or more1,140 · 78.1% here, 72.0% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 224Z00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,460 NPPES records list occupational therapy assistant (224Z00000X) as their primary taxonomy with a practice address in Wisconsin: 25 per 100,000 residents against 12 nationally (50 states and D.C.). Milwaukee has 101 of them (7%).

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. Illinois1,498
  2. North Carolina1,357
  3. Indiana1,091
  4. Virginia1,086

States with a similar rate per 100,000

  1. Oklahoma23.4
  2. Delaware23.0
  3. Ohio20.5
  4. Kansas20.0

The largest states

  1. Texas4,278
  2. Florida3,825
  3. New York2,732
  4. Ohio2,421
  5. Pennsylvania2,155

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.