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 52 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. Christopher SimpsonChicago, IL 606141861211799
  2. Kathryn SimpsonHoffman Estates, IL 601691538639109
  3. Lauren SimpsonFlossmoor, IL 604221891164133
  4. Laila SimrinArlington Heights, IL 600051609618438
  5. Teresa SimsTinley Park, IL 604871003451030
  6. Jeanine SinopleTinley Park, IL 604771134637309
  7. Kallie SiscoeChicago Heights, IL 604111225419948
  8. Holly Sitts, MS, BCBAPlainfield, IL 605441093484958
  9. Alesia Sivels, BCBAChicago, IL 606311770266165
  10. Kerry SivertsenChicago, IL 606111154760106
  11. Elizabeth Six, BCBAChicago, IL 606181114405479
  12. Peyton Six, BCBASpringfield, IL 627041235808437
  13. Jennifer Sizemore, BCBALibertyville, IL 600481437764131
  14. Anna SjostromMascoutah, IL 622581356787030
  15. Lauren SkaleckiVernon Hills, IL 600611003772104
  16. Kathy SkalkosChicago, IL 606131205337490
  17. Carrie SkallaEvanston, IL 602011124406624
  18. Alyssa SkeltonBloomington, IL 617041609526912
  19. Chelsea Skinner, M.S., BCBAWoodridge, IL 605171255676532
  20. Samantha SkinnerHomer Glen, IL 604911659048130
  21. Tessla SkrobotArlington Heights, IL 600051780336495
  22. Aneta Slaba, BCBACrystal Lake, IL 600141174199129
  23. Sarah SlagerChicago, IL 606591528732542
  24. Jennifer SlaterDanvers, IL 617321619269040
  25. Marissa SlatteryOak Lawn, IL 604531124503107
  26. Sarah SmagaLombard, IL 601481447860960
  27. Stacey Small, M.S., BCBA, QMHPWest Frankfort, IL 628961407285604
  28. Emily SmedlundHoffman Estates, IL 601691407247117
  29. Melissa SmerzChicago Heights, IL 604111619338290
  30. Alexander SmithEdwardsville, IL 620251811522451
  31. Alexandra SmithO Fallon, IL 622691033728167
  32. Anthony SmithTinley Park, IL 604771174915169
  33. Brandy SmithCarbondale, IL 629021235627654
  34. Breona SmithOak Park, IL 603041568096675
  35. Cheyenne SmithChicago, IL 606541659074417
  36. Colleena SmithRockford, IL 611071851850242
  37. Demetrea SmithAurora, IL 605061841802022
  38. Dwight SmithRockford, IL 611011366087660
  39. Erica SmithChicago, IL 606181558900449
  40. Jessica SmithChicago, IL 606071134866387
  41. Levi SmithDecatur, IL 625211770082240
  42. Nikema SmithChicago, IL 606511871422303
  43. Talisa SmithChicago, IL 606431215608856
  44. Trisha Smith, MS, BCBASkokie, IL 600771891181830
  45. Verma Smith, BCBACountry Club Hills, IL 604781699354472
  46. Samantha SmockEast Peoria, IL 616111053931196
  47. Sierra Snell, BCBATinley Park, IL 604871770210668
  48. Paulina SnopekHickory Hills, IL 604571316680234
  49. Therese SnowGlenview, IL 600251871189001
  50. Alicia Snyder, BCBACentralia, IL 628011013273465

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.

0.2% 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. Illinois0.2%
  2. United States0.1%

Behavior Analyst records in Illinois, measured

  • In a Medicare file6 of 3,082 · 0.2% here, 0.1% nationally
  • In the CMS Doctors and Clinicians file8 · 0.3% here, 0.1% nationally
  • Not updated in five years or more1,483 · 48.1% here, 47.0% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103K00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

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.