NPPES file of Aug 9, 2026

Physician Assistant in Illinois

4,926 NPPES records list physician assistant with a practice address in Illinois, 39 per 100,000 residents, the 40th highest rate of 51. Chicago and Naperville have the most; each record links to the provider's NPI and the Illinois license search. Page 65 of 99.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363A00000X · 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, 1,445

  1. Chicago1,445
  2. Naperville117
  3. Rockford115
  4. Springfield103
  5. Peoria95

Physician Assistant records in Illinois

  1. Makiko Ogino-McElligott, PA-CCrystal Lake, IL 600141134121965
  2. Olivia Ogle, PA-CNaperville, IL 605401982407110
  3. Won Oh, PA-CChicago, IL 606111053899138
  4. Amanda Ohnesorge, PATremont, IL 615681841578143
  5. Riliwan Ojelade, PA-CJoliet, IL 604351851571830
  6. Melissa Okeefe, PACHarvey, IL 604261376753319
  7. Michelle Okerstrom, PA-CChicago, IL 606111235727074
  8. Ashley Okigawa, PHYSICIAN ASSISTANTElgin, IL 601231104176262
  9. Claire OkkemaGlenview, IL 600261023635687
  10. Sara OknerChicago, IL 606371275388498
  11. Allison Oliver, PA-CDeerfield, IL 600151952937989
  12. Jamie Olivero, PA-CChicago, IL 606111518365121
  13. Erin Olsen, PA-CPark Ridge, IL 600681508020983
  14. Katherine Olsen, PA-CNaperville, IL 605631386374932
  15. Kelly Olsen, PA-CAurora, IL 605041740702927
  16. Caryn Olshansky, PA-CNiles, IL 607141033644992
  17. Douglas Olson, PA-CPalos Hills, IL 604651417581117
  18. Jacqueline Olson, PA-CEvanston, IL 602011316668494
  19. Julia Olson, PA-CPark Ridge, IL 600681457070351
  20. Kelsey Olson, PA-CLake Barrington, IL 600101861084725
  21. Leah Olson, PA-CChicago, IL 606111386953172
  22. Monica OlszewskiPark Ridge, IL 600681528741352
  23. Adelisa Omerovic, PA-CGlenview, IL 600261750173753
  24. Tincy Oommen, PA-CChicago, IL 606011891295069
  25. Alexis Opel, PA-CPekin, IL 615541578300679
  26. Goda Orentaite, PA-CEvergreen Park, IL 608051861114373
  27. Anna Orr, PAChicago, IL 606231992288021
  28. Mario Ortiz, PA-CChicago, IL 606081689436305
  29. Christopher Orvino, PA CElmhurst, IL 601261841292240
  30. Ebun Osaze, PADanville, IL 618321487705471
  31. Stephanie Osborne, PA-CArlington Heights, IL 600051114618097
  32. Angie Osmanski, PA-CDes Plaines, IL 600161801342522
  33. Danielle Osmon, PA-CMcHenry, IL 600501912867805
  34. Anna Osmun, PA-CGeneva, IL 601341154656858
  35. Hannah OstermannOak Lawn, IL 604531457908295
  36. Alisyn Ostrom, PA-CPalos Hills, IL 604651508693839
  37. Margaret Ostrowski, PACPark Ridge, IL 600681134464704
  38. Jennifer Oswald, PA-CChicago, IL 606111679909071
  39. Michiko Ota, PA-CChicago, IL 606111326871633
  40. Kristin Otolski, PA-CGlenview, IL 600261689176703
  41. Kelly Ott, P.A.Chicago, IL 606231992072441
  42. Jennafer Ottenheimer, PA-CLake Forest, IL 600451356753016
  43. Grace-Marie Ottomanelli, PA-CGeneva, IL 601341457756272
  44. Alex OurthBowen, IL 623161548041353
  45. Kayla Oushana, PA-CChicago, IL 606111356298046
  46. Trey Owens, PA-CChicago, IL 606111548725062
  47. Claude Owikoti, P.A.Dwight, IL 604201871762898
  48. Jennifer Oyler, PA-CMonticello, IL 618561104325091
  49. Francesca Pabalan, PA-CChicago, IL 606221285281386
  50. Paige Pacheco, PA-CChicago, IL 606071003697095

Source: CMS NPPES, primary taxonomy 363A00000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 40 of 51 per resident

  1. South Carolina43
  2. Georgia42
  3. New Mexico40
  4. Illinois39
  5. California37
  6. New Jersey37
  7. 50 states and D.C.49

Source: CMS NPPES, primary taxonomy 363A00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

82.1% of these records appear in a Medicare file, against 77.9% 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. Illinois82.1%
  2. United States77.9%

Physician Assistant records in Illinois, measured

  • In a Medicare file4,045 of 4,926 · 82.1% here, 77.9% nationally
  • In the CMS Doctors and Clinicians file3,408 · 69.2% here, 62.6% nationally
  • Not updated in five years or more1,716 · 34.8% here, 39.3% nationally
  • Median graduation year2019 · the 3,407 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363A00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

4,926 NPPES records list physician assistant (363A00000X) as their primary taxonomy with a practice address in Illinois: 39 per 100,000 residents against 49 nationally (50 states and D.C.). Chicago has 1,445 of them (29%).

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. Massachusetts4,713
  2. Georgia4,662
  3. Ohio5,325
  4. Virginia4,408

States with a similar rate per 100,000

  1. New Mexico40.1
  2. California37.1
  3. New Jersey36.5
  4. Texas36.1

The largest states

  1. New York15,555
  2. California14,451
  3. Texas10,999
  4. Florida10,257
  5. North Carolina9,279

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.