NPPES file of Aug 9, 2026

Specialist in Illinois

1,154 NPPES records list specialist with a practice address in Illinois, 9 per 100,000 residents, the 35th highest rate of 51. Chicago and Evanston have the most; each record links to the provider's NPI and the Illinois license search. Page 4 of 24.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 174400000X · 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, 231

  1. Chicago231
  2. Evanston36
  3. Rockford21
  4. Freeport20
  5. Naperville20

Specialist records in Illinois

  1. Carmelita Carriaga, MD, FAAFPChicago, IL 606221194761031
  2. Megan Carrick, OTR/LNorthfield, IL 600931659600898
  3. Gloria Caruso, M.D.Bloomingdale, IL 601081164442877
  4. Guillermo Castillo, M.D.Savoy, IL 618741801828967
  5. Robert Cates, MDScott Afb, IL 622251144215989
  6. Michael Cavanaugh, M.D.Gurnee, IL 600311407858376
  7. Sara Cearlock, COTA/LTaylorville, IL 625681922314335
  8. Gerald Cerniak, M.D.Mahomet, IL 618531932110087
  9. Erica ChappleFreeport, IL 610321245832039
  10. Grant Chavin, MDHomewood, IL 604301548284730
  11. Juan Chediak, M.D.Chicago, IL 606571720098361
  12. Lillian Chen-Byerley, MS, OTR/L, RCTCNorthfield, IL 600931972514594
  13. Tien Cheng, M.D.Gurnee, IL 600311003881293
  14. John Cherf, MDChicago, IL 606401619989498
  15. John Cheronis, M.D.Chicago, IL 606141750755005
  16. Kendra Chesney, M.EDHuntley, IL 601421427177567
  17. Samantha Cheung, MT-BCSt Charles, IL 601751154559698
  18. Onyekwelu ChidumeHomewood, IL 604301295970085
  19. Duangchai Chiranand, M.D.Orland Park, IL 604671770992257
  20. Changryol Choi, ATCCarlinville, IL 626261083722235
  21. Raymond Chow, M.D.Gurnee, IL 600311356369037
  22. Mohammed Chowdhury, M.D.Palatine, IL 600741831174598
  23. Nina ChristmasChicago, IL 606071881557288
  24. Charles CiceroFreeport, IL 610321821020694
  25. Wayne Cichowicz, D.N., L.D.N.Cicero, IL 608041750465084
  26. Carol Ciesielski, MDChicago, IL 606161437203585
  27. Lisa CisekOrland Park, IL 604671750525168
  28. Dominique ClaiborneMatteson, IL 604431578257218
  29. Shane ClausellFlossmoor, IL 604221437966975
  30. Alfred ClementiPalatine, IL 600671841598851
  31. Catherine Clinton, M.D.Chicago, IL 606111346268422
  32. Sarah Cluever, ATCAurora, IL 605061649239419
  33. Rindie Coker, D.N.Evanston, IL 602021437257193
  34. Clifford Coleman, M.D.Carbondale, IL 629011053492710
  35. Katari Coleman, D.T.Chicago, IL 606281710011705
  36. Mark Coleman, MDLa Grange, IL 605251295750743
  37. Dympna Coll, MDBarrington, IL 600101972531549
  38. Towanda Collins, OTR LCalumet Park, IL 608271700903150
  39. Nicholas Colosi, MDMarion, IL 629591780658690
  40. Mark Colston, A.T.C.,Peoria, IL 616251265585517
  41. Elaine Combs, DEVELOPMENTAL THERAPHerrin, IL 629481417169947
  42. Elizabeth Comiskey, M.D.Chicago, IL 606121013965102
  43. Lorebeth ConfortiSleepy Hollow, IL 601181386814119
  44. Dana ConlanChicago, IL 606081427379924
  45. Karen Connelly, DTChicago, IL 606141992811582
  46. Susan Connor, CDSChicago, IL 606431821117573
  47. Stephen Cook, MDSpringfield, IL 627041043268386
  48. Jack Cooksey, M.D.Evanston, IL 602011497030068
  49. Karen Cooley, DEVELOPMENTAL THERAPKewanee, IL 614431225158611
  50. Jose CortesCentralia, IL 628011053738559

Source: CMS NPPES, primary taxonomy 174400000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 35 of 51 per resident

  1. Wyoming9
  2. Nebraska9
  3. Virginia9
  4. Illinois9
  5. Idaho9
  6. Vermont9
  7. 50 states and D.C.18

Source: CMS NPPES, primary taxonomy 174400000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

19.1% of these records appear in a Medicare file, against 17.0% 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. Illinois19.1%
  2. United States17.0%

Specialist records in Illinois, measured

  • In a Medicare file220 of 1,154 · 19.1% here, 17.0% nationally
  • In the CMS Doctors and Clinicians file127 · 11.0% here, 11.1% nationally
  • Not updated in five years or more968 · 83.9% here, 77.3% nationally
  • Median graduation year1988 · the 127 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 174400000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,154 NPPES records list specialist (174400000X) as their primary taxonomy with a practice address in Illinois: 9 per 100,000 residents against 18 nationally (50 states and D.C.). Chicago has 231 of them (20%).

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. Colorado1,105
  2. Massachusetts1,096
  3. Oregon1,085
  4. New Hampshire1,010

States with a similar rate per 100,000

  1. Virginia9.2
  2. Nebraska9.3
  3. Idaho9.0
  4. Wyoming9.4

The largest states

  1. New York22,636
  2. California5,749
  3. Florida2,685
  4. Washington2,609
  5. Pennsylvania2,031

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.