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 1 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. Zehra Abbasi, COTA/LNaperville, IL 605631518219021
  2. Suad AbdullahOrland Park, IL 604671487031423
  3. Marissa Abuel, COTA/LNaperville, IL 605631376907618
  4. Brittany Ackman, COTA/LLincoln, IL 626561740970557
  5. Denise AdamsEvergreen Park, IL 608051891079091
  6. Jaime Adams, COTA LLansing, IL 604381124235429
  7. Pamela Adams Kammin, COTAGlenview, IL 600261841569480
  8. Katelyn AdamskiGlenview, IL 600261669896833
  9. Nichole Addo-Stover, COTAOrland Park, IL 604671992924815
  10. Lauren Adeszko, COTA/LFrankfort, IL 604231730325374
  11. Natalie AdkinsAstoria, IL 615011144002510
  12. Alexis Adler, COTADekalb, IL 601151578190336
  13. Jhaneil AfflickGlenview, IL 600261265102479
  14. Oluwaseyi AfuwapeChicago, IL 606181891219200
  15. Jason AgriopoulosRolling Meadows, IL 600081225663404
  16. Giuliana Aiello, COTASchaumburg, IL 601731235347212
  17. Liana Alis, COTA/LChicago, IL 606451366706962
  18. Madalynn AllenChampaign, IL 618211497623565
  19. Rhonda Allen, COTA/LChicago, IL 606151104538750
  20. Les AllingerDanville, IL 618321326395203
  21. Daniela Alvarez, COTACalumet City, IL 604091083248363
  22. Roberto Alvarez, COTADowners Grove, IL 605151174292833
  23. Cathy Ambrose-Hill, COTAOrland Park, IL 604671740407048
  24. Jamie AmelseVernon Hills, IL 600611982725123
  25. Erin Anderson, COTACarbondale, IL 629021114482734
  26. Miranda Anderson, COTA/LGlenview, IL 600261912625492
  27. Sarah Anderson, OTASpringfield, IL 627111083312144
  28. Tabbitha Anderson, COTA/LHinsdale, IL 605211811875560
  29. Jennifer Andrews, COTAElgin, IL 601201073072484
  30. Theresa Andrews-SingletonMonee, IL 604491891150678
  31. Aicha Anouar, COTASavoy, IL 618741437857257
  32. Bettina AnthonyGlenview, IL 600261255880001
  33. Kimberly Applen, COTA/LPeoria, IL 616141043485576
  34. Nelly Arambula, COTA/LHarwood Hts, IL 607061851563647
  35. Marilee Areen, COTABloomingdale, IL 601081124392907
  36. Angela Armah-OkineGlenview, IL 600261528384617
  37. Pamela Arneson, COTARockford, IL 611031841571361
  38. Annie ArnoldOswego, IL 605431548424518
  39. Morgan ArnoldGlenview, IL 600261568070696
  40. Flora Arturo, COTA/LWheaton, IL 601871255528667
  41. Toni AshleyEast Alton, IL 620241730945585
  42. Emily AustinCanton, IL 615201245405711
  43. Emalyse AyersPeoria Heights, IL 616161225998594
  44. Ashley BaalmanPittsfield, IL 623631609295161
  45. Kasara Bachman, COTA/LMalden, IL 613371053970731
  46. Sonny BagbyVienna, IL 629951063156677
  47. Laura BaileyChicago, IL 606251609440874
  48. Sonata BaileyChicago, IL 606201326693110
  49. Kathryn Baird, COTASwansea, IL 622261497189732
  50. Jordan Baker, COTA/LMinonk, IL 617601942976477

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.