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 18 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. Heather Muckler, COTAMadison, WI 537171003094467
  2. Courtney Mueller, COTAMarshfield, WI 544491225482722
  3. Shelly Mueller, COTABaraboo, WI 539131063685469
  4. Kelly Mulder, COTAPort Washington, WI 530741639507643
  5. Sharon MulveyOshkosh, WI 549011992034318
  6. Susan Munoz, COTAKenosha, WI 531431598001943
  7. Elizabeth MurphyAshland, WI 548061811466915
  8. Erin Murphy, COTA/LDelavan, WI 531151194092387
  9. Kim Murphy, COTAWashburn, WI 548911417016700
  10. Sally Murray, COTAMilwaukee, WI 532241447466339
  11. Hannah Naccarato, COTASalem, WI 531681366334427
  12. Amanda Nachtwey Fritsch, COTABrookfield, WI 530451245870104
  13. Monica NajeraGreen Bay, WI 543011144087891
  14. Nadira Nasir, COTAMilwaukee, WI 532201295177343
  15. Mary NawrockiVerona, WI 535931144435108
  16. Crystal Neal, COTASchofield, WI 544761942476601
  17. Kelli Neal, COTAMadison, WI 537191780889600
  18. Jodi Needham, COTAHillsboro, WI 546341841370624
  19. Tatum Nehls, COTACaledonia, WI 534021356115539
  20. Lynnae Nehring, COTAMenomonie, WI 547511093050320
  21. Lauri NeibauerPark Falls, WI 545521326370586
  22. Erika Neisius, COTAJanesville, WI 535451841047727
  23. Jennifer Neisner, COTARacine, WI 534061144621574
  24. Ann Nelson, COTALa Crosse, WI 546011083881403
  25. Crystie NelsonAshland, WI 548061760052104
  26. Janine Nelson, COTAMellen, WI 545461942636238
  27. Nancy Nemeth, COTAWest Allis, WI 532271396182366
  28. Jacqueline Ness, COTASauk City, WI 535831336299965
  29. Devin Nessen, COTA/LMadison, WI 537921407467368
  30. Kristina NguyenSouth Milwaukee, WI 531721255811956
  31. Chelsea NicksicHolmen, WI 546361932698396
  32. Julia NielsenLa Crosse, WI 546011619426848
  33. Joanne Niemuth, COTAClintonville, WI 549291316191877
  34. Kay Nigbor, COTAPortage, WI 539011326292103
  35. Lisa Nikula, C.O.T.A.Madison, WI 537041306943444
  36. Maya NinnemannBloomer, WI 547241588976187
  37. Allison Nitchey, COTAEau Claire, WI 547031376080861
  38. Nancy Nordbeck, COTAWisconsin Dells, WI 539651528248358
  39. Rachel NordentoftDelavan, WI 531151639455835
  40. Brent Nordquist, COTAHammond, WI 540151356972137
  41. Danielle O'Brien, COTANeillsville, WI 544561457870016
  42. Sheila O'Brien, COTAJanesville, WI 535461902217664
  43. Lynn O'Connell, COTAAshland, WI 548061417146473
  44. Brenda O'LearyMadison, WI 537191730363375
  45. Lisa O'Shasky, COTAPort Edwards, WI 544691609033372
  46. Kerry O'Sullivan, COTAAppleton, WI 549111487074688
  47. Tammy Obe, PTA COTA LPlatteville, WI 538181164682753
  48. Cara Obst, OTAWaterford, WI 531851720205669
  49. Omoruyi OkundayeOshkosh, WI 549011891613774
  50. Valerie Olby, COTAAshland, WI 548061124294996

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.