NPPES file of Aug 9, 2026

Occupational Therapy Assistant in Illinois

1,498 NPPES records list occupational therapy assistant with a practice address in Illinois, 12 per 100,000 residents, the 27th highest rate of 51. Chicago and Glenview have the most; each record links to the provider's NPI and the Illinois license search. Page 29 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).

Chicago has the most, 156

  1. Chicago156
  2. Glenview126
  3. Orland Park43
  4. Springfield33
  5. Peoria30

Occupational Therapy Assistant records in Illinois

  1. Stephanie Wall, COTA/LSpringfield, IL 627111477718534
  2. Christine Wallner, COTAChicago, IL 606061164643631
  3. Daniel Walton, COTADu Quoin, IL 628321164094116
  4. Katy WannerGlenview, IL 600261669132643
  5. Carol WardHanover Park, IL 601331881975845
  6. Melissa Ward, COTA/LHanover Park, IL 601331568743573
  7. Ellen WarnerCaseyville, IL 622321023363132
  8. Michael Warner, COTADecatur, IL 625211154637072
  9. Abigail Waters, COTA/LAntioch, IL 600021790923530
  10. Renda Watterson, COTABloomington, IL 617011316268014
  11. Kimberly Webb, COTALMount Vernon, IL 628641902002074
  12. Carl Weber, COTA/LCary, IL 600131881297018
  13. Laurie WeberHoopeston, IL 609421508462102
  14. Marissa WeberMendota, IL 613421558967059
  15. Jessica WegerLake In The Hills, IL 601561437886280
  16. Hayley Wegrzyn, COTAWheaton, IL 601891841072782
  17. Brooke Weinberg, COTA/LPark Ridge, IL 600681134921216
  18. Joan Welch, COTALa Grange, IL 605251679004055
  19. Torence WelchMorton Grove, IL 600531447707757
  20. Kevin WellsGlenview, IL 600261073181038
  21. Madison Wells, COTA/LEdwardsville, IL 620251881330322
  22. Karen Wenberg, COTANorth Riverside, IL 605461952823932
  23. Barbara WendtGlenview, IL 600261538897756
  24. Jacqueline Wendt, COTAVolo, IL 600731568849115
  25. Latisha WestHarvey, IL 604261619125812
  26. Lisa Wester, COTA/LElmwood Park, IL 607071295055135
  27. Cheyenne WheatleyBloomington, IL 617041295689123
  28. Kathleen WheelhouseEast Peoria, IL 616111811161706
  29. Amy WhetstoneEast Peoria, IL 616111811452865
  30. Stephanie Whisenand, COTA/LO Fallon, IL 622691336942861
  31. Jonathan White, COTASouth Holland, IL 604731225374366
  32. Kelly White, COTA/LDowners Grove, IL 605151023343092
  33. Yakima WhiteheadCalumet Park, IL 608271235727025
  34. Courtney WhitenerUrbana, IL 618021881917003
  35. Madena Whitesell, COTAMinonk, IL 617601700107406
  36. Ashley Whitley, COTA/LBloomington, IL 617041043787054
  37. Dana Whitlock, COTA/LSpringfield, IL 627021669984647
  38. Candice Wietholder, COTA/LMacomb, IL 614551902072556
  39. Samantha WiggintonQuincy, IL 623011215263058
  40. Timothy Wild, COTAOrland Park, IL 604671861602823
  41. Erica WilhamSkokie, IL 600761700245701
  42. Peggy Wilkerson, COTA/LBolingbrook, IL 604401457456758
  43. Jennifer Wilkins, COTA/LOak Lawn, IL 604531952632085
  44. Erika Will, COTAElkville, IL 629321598115156
  45. Bianca Williams, COTA/LChicago, IL 606161760622799
  46. Charity Williams, COTAPeoria, IL 616141609103084
  47. Christine WilliamsO Fallon, IL 622691821828435
  48. Deenaa Williams, COTASouth Holland, IL 604731710108386
  49. Joni Williams, COTA/LChicago, IL 606521528335650
  50. Lisa Williams, COTA/LPalos Park, IL 604641831910835

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

Illinois ranks 27 of 51 per resident

  1. North Carolina13
  2. Connecticut12
  3. South Dakota12
  4. Illinois12
  5. Nebraska12
  6. Mississippi12
  7. 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. Illinois0.1%
  2. United States0.1%

Occupational Therapy Assistant records in Illinois, measured

  • In a Medicare file1 of 1,498 · 0.1% here, 0.1% nationally
  • In the CMS Doctors and Clinicians file2 · 0.1% here, 0.1% nationally
  • Not updated in five years or more1,131 · 75.5% 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

1,498 NPPES records list occupational therapy assistant (224Z00000X) as their primary taxonomy with a practice address in Illinois: 12 per 100,000 residents against 12 nationally (50 states and D.C.). Chicago has 156 of them (10%).

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. Wisconsin1,460
  2. North Carolina1,357
  3. California1,869
  4. Indiana1,091

States with a similar rate per 100,000

  1. South Dakota12.0
  2. Nebraska11.9
  3. Mississippi11.9
  4. Colorado11.7

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.