NPPES file of Aug 9, 2026

Behavior Analyst in Illinois

3,082 NPPES records list behavior analyst with a practice address in Illinois, 25 per 100,000 residents, the 24th highest rate of 51. Chicago and Naperville have the most; each record links to the provider's NPI and the Illinois license search. Page 41 of 62.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103K00000X · 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, 674

  1. Chicago674
  2. Naperville123
  3. Northbrook70
  4. Oak Park62
  5. Tinley Park62

Behavior Analyst records in Illinois

  1. Chivon Niziolek, BCBAChicago, IL 606071336495514
  2. Arina NizovetskayaGlenview, IL 600261760308183
  3. Lloydtonda NolanFlossmoor, IL 604221477098903
  4. Meredith Nolan, BCBAChampaign, IL 618201801618517
  5. Sunena NooraniSkokie, IL 600761386937670
  6. Natasha NoorianSouth Holland, IL 604731073817599
  7. Matthew NordmanPlainfield, IL 605441689044943
  8. Amanda Nordmeyer, BCBAPalatine, IL 600741780418475
  9. Malon NorfleetChampaign, IL 618201932488285
  10. Kathleen Norris, BCBAOswego, IL 605431619497351
  11. Kelly Norris, PH.D., BCBAChicago, IL 606431871055889
  12. Grace NortonGlen Ellyn, IL 601371639751712
  13. Jordan NorwoodDowners Grove, IL 605151467074047
  14. Nicole Notowidigdo, MA, BCBAChicago, IL 606461780812636
  15. Cameren NovakSpringfield, IL 627021598512394
  16. Erin Nowak, BCBA, LCSWOak Lawn, IL 604531386978823
  17. Katherine Null, BCBAGurnee, IL 600311548537707
  18. Ysatris NunezLombard, IL 601481609430834
  19. Selene Nuno, RBTPlainfield, IL 605441760202154
  20. Faith NwodoLincolnwood, IL 607121336537257
  21. Kaitlynn NykielVernon Hills, IL 600611912574336
  22. Erin O'Brien, MA, BCBAAurora, IL 605021790166700
  23. Jessica O'BrienRosamond, IL 620831316671738
  24. Kelly O'BrienAlsip, IL 608031174135180
  25. Kiley O'Connell, BCBAElmhurst, IL 601261912420274
  26. Kerry O'ConnorLa Grange, IL 605251255613626
  27. Maureen O'ConnorArlighton Heights, IL 600041508302373
  28. Kate O'DriscollArlington Heights, IL 600041912274952
  29. Lindsay O'KeefeCicero, IL 608041336800390
  30. Patrick O'MalleyTinley Park, IL 604771902044043
  31. Shaunette O'NeilHoffman Estates, IL 601691003658121
  32. Ashley O'Neill, BCBATinley Park, IL 604871447899687
  33. John O'Neill, M.A.Carbondale, IL 629021245588995
  34. Nell O'NeillDes Plaines, IL 600161659030740
  35. Autumn O'Reilly, BCABATrenton, IL 622931174953988
  36. Julianne O'Shea, BCBAChicago, IL 606431205620150
  37. Clare O'SullivanChicago, IL 606071922663442
  38. Jillian O'Sullivan, BCBATinley Park, IL 604771467817155
  39. Naomi Obebe, BCBAChicago, IL 606471912606625
  40. Sara ObergSpringfield, IL 627111316722440
  41. Jessica ObremskiAurora, IL 605021942067608
  42. Nidia OcampoSchaumburg, IL 601731548050073
  43. Dora Ocanas-HerreraChicago, IL 606161619331238
  44. Alissia OchaitaChicago, IL 600161962274464
  45. Eileen OconnorChicago, IL 606181568129427
  46. Kathryn OconnorHoffman Estates, IL 601691710821491
  47. Justyna OdrobinaChicago, IL 606081114302676
  48. Keri Offenstein, BS MHPChampaign, IL 618201568785145
  49. Oluwamayowa OginniChicago, IL 606451508329707
  50. Chelsey Ohman, MA, BCBADes Plaines, IL 600161003339896

Source: CMS NPPES, primary taxonomy 103K00000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 24 of 51 per resident

  1. Rhode Island28
  2. New York26
  3. Maryland25
  4. Illinois25
  5. Georgia25
  6. Minnesota24
  7. 50 states and D.C.32

Source: CMS NPPES, primary taxonomy 103K00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

What the count covers

3,082 NPPES records list behavior analyst (103K00000X) as their primary taxonomy with a practice address in Illinois: 25 per 100,000 residents against 32 nationally (50 states and D.C.). Chicago has 674 of them (22%).

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. Washington2,978
  2. Michigan3,195
  3. Virginia2,770
  4. Georgia2,708

States with a similar rate per 100,000

  1. Minnesota24.3
  2. Maryland25.1
  3. Arizona23.9
  4. New York26.5

The largest states

  1. California20,348
  2. Florida13,565
  3. Texas5,837
  4. New York5,183
  5. Massachusetts4,718

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.