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 23 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. Brianna RewertsRock Island, IL 612011760157176
  2. Miguel Reyes, COTAChicago, IL 606291811526890
  3. Kathy ReynoldsOdin, IL 628701700435757
  4. Abigale Ricci, COTAJoliet, IL 604331225582455
  5. Lytese Rice, COTALansing, IL 604381609395276
  6. Lisa Rich, COTA/LSpringfield, IL 627031871889477
  7. Taylor RichChampaign, IL 618201356816466
  8. Victoria Richards, COTA/LMacomb, IL 614551467171074
  9. Ethan Ridenour, COTA/LCarrollton, IL 620161912319039
  10. Jennifer Riedle, COTA/LMount Pulaski, IL 625481073920658
  11. April RiehlElmwood Park, IL 607071073008546
  12. Lisa Riley, COTA/LMount Vernon, IL 628641225287089
  13. Theresa Riley, COTAOrland Park, IL 604671982812319
  14. John Rinaldi, COTA/LNormal, IL 617611760880967
  15. Cynthia Rivera, OTA/LGlenview, IL 600261912384694
  16. Stephanie RiveraVernon Hills, IL 600611104752955
  17. Darla Roach, COTAOrland Park, IL 604671750599197
  18. Kelly RobertsChicago, IL 606141891940615
  19. Susan Roberts, COTADanville, IL 618321629576194
  20. Angie Robinson, COTAChicago, IL 606521134319718
  21. John RobinsonRolling Meadows, IL 600081508333592
  22. Jennifer Rock, COTAGlenview, IL 600261275002867
  23. Colleen Rodgers, COTACrystal Lake, IL 600141518367911
  24. Adriana RodriguezJoliet, IL 604321225711070
  25. Elizabeth Rodriguez, COTAAurora, IL 605061649892027
  26. Jennifer RodriguezChicago, IL 606131700332483
  27. Kate RodriguezRomeoville, IL 604461972259869
  28. Leandra Rodriguez, COTAChicago, IL 606061174894711
  29. Tynisa Rodriguez, COTA/LOrland Park, IL 604671619364817
  30. Sarah Roe, OTAGlenview, IL 600261811559727
  31. Candy Rogers, COTAILMt Vernon, IL 628641801588546
  32. Jesika Rogers, COTA/LShelbyville, IL 625651720804628
  33. Mary Rohrer, COTA/LGlenview, IL 600261447425434
  34. Lina RojasWheaton, IL 601891023572575
  35. Carolanda Rollins, COTAPark Forest, IL 604661033080510
  36. Kristin Romero, COTA/LWood River, IL 620951003748534
  37. Carrie Rooy, COTAPalos Heights, IL 604631811387822
  38. Arianna Rosas, COTA/LChicago, IL 606411902439276
  39. Karly RosencransStreator, IL 613641144808759
  40. Brenda Rostescu, COTA/LChicago, IL 606341093949067
  41. Chelsey RothOpdyke, IL 628721669896411
  42. Jeffrey Rowland, COTA/LAddison, IL 601011265809826
  43. Tisha RueterOdin, IL 628701265081277
  44. Mary Rachel Rupert, COTA/LGlenview, IL 600261215642061
  45. Melissa Ruppert, COTA/LJoliet, IL 604351003531138
  46. Jocelyn Rush, COTA/LBeach Park, IL 600991922470178
  47. Tamrah RushChicago Heights, IL 604111538389333
  48. Katelyn Russell, COTA/LDanville, IL 618321154829885
  49. Taylor Rutledge, COTA/LCarmi, IL 628211982148417
  50. Catherine RyanSherman, IL 626841578219705

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.