NPPES file of Aug 9, 2026

Internal Medicine Physician in Illinois

7,238 NPPES records list internal medicine physician with a practice address in Illinois, 58 per 100,000 residents, the 9th highest rate of 51. Chicago and Maywood have the most; each record links to the provider's NPI and the Illinois license search. Page 131 of 145.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · 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, 2,867

  1. Chicago2,867
  2. Maywood257
  3. Springfield196
  4. Evanston178
  5. Oak Lawn173

Internal Medicine Physician records in Illinois

  1. Diana Thiara, MDRochelle, IL 610681043697071
  2. Vincent Thieu, MDChicago, IL 606571972204667
  3. William Thinnes, MDChicago, IL 606121558922203
  4. Allison Thoburn, M.D.Chicago, IL 606231962881086
  5. Abraham Thomas, MDClifton, IL 609271063423655
  6. Annie ThomasChicago, IL 606121801788153
  7. Asha Thomas, M.D.Westchester, IL 601541124171459
  8. Bonnie Thomas, MDChicago, IL 606151851321467
  9. Caitlin Thomas, MDChicago, IL 606121750900486
  10. Catherine Thomas, M.D.St Charles, IL 601741295785756
  11. Cynthia Thomas, MDChicago, IL 606081043264823
  12. Divya Thomas, DOOak Lawn, IL 604531548055635
  13. Frances Thomas, M.D.Chicago, IL 606141437161130
  14. Kayla Thomas, DOPeoria, IL 616371235717448
  15. Leyland Thomas, MDGranite City, IL 620401922068121
  16. Margaret Thomas, M.D.Glenview, IL 600251669412342
  17. Mary Thomas, M.D.Kankakee, IL 609011821160888
  18. Miles ThomasChicago, IL 606371164123022
  19. Philip Thomas, DOChicago, IL 606121184374761
  20. Ronay Thomas, MDChicago, IL 606371225773328
  21. Sajan Thomas, M.D.Melrose Park, IL 601601992785372
  22. Shon Thomas, MDDeerfield, IL 600151811634579
  23. Steffy Thomas, MDEvanston, IL 602011366383051
  24. Susan Thomas, MDVernon Hills, IL 600611750440251
  25. Tin Thomas, M.D.Chicago, IL 606121013001064
  26. Victor Thomas, MDChicago, IL 606281619939212
  27. Michelle Thommi, DO, MSChicago, IL 606251356274286
  28. Katherine ThompsonChicago, IL 606371477736676
  29. Katherine Thompson, MD, MPHSpringfield, IL 627031598031239
  30. Kayla Thompson, MD, MBAChicago, IL 606111255191268
  31. Trevor Thompson, MDMaywood, IL 601531225527708
  32. Steven Thornton, MDPeoria, IL 616141194885574
  33. Charles Thorsen, M.D.Evanston, IL 602011578540985
  34. Vijayalakshmi Thota, DOOrland Park, IL 604621972501039
  35. Vanaja Thotten, NPChicago, IL 606171083253546
  36. Versha Thourani, M.D.Urbana, IL 618011598128118
  37. Courtney Thrower, DOPeoria, IL 616371669052213
  38. Caroline Thurlow, M.D.Chicago, IL 606121972760460
  39. Christen Tibbs, M.D.Hazel Crest, IL 604291518123363
  40. Charu Tibrewal, MDChicago, IL 606121306735287
  41. Vanessa TieuChicago, IL 606121245486430
  42. Rasa Tijunelis, M.D.Chicago, IL 606111750431011
  43. Vasuki Tikkiwal, MDChicago, IL 606571023670833
  44. Gerasim Tikoff, M.D.Chicago, IL 606051871898379
  45. Ermias Tilahun, M.D.Chicago, IL 606401285628768
  46. Thomas Tilot, M.D.McHenry, IL 600501720146400
  47. Drishti Timsina, MDEvanston, IL 602021205667854
  48. Andrew Ting, M.DChicago, IL 606121659491587
  49. Meghana TipparthyBarrington, IL 600101710337886
  50. Aamirhusen Tirmijisaiyed, MDNorth Chicago, IL 600641942995824

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 9 of 51 per resident

  1. Hawaii63
  2. New York62
  3. Delaware58
  4. Illinois58
  5. Michigan57
  6. Pennsylvania56
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

72.5% of these records appear in a Medicare file, against 78.7% 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. Illinois72.5%
  2. United States78.7%

Internal Medicine Physician records in Illinois, measured

  • In a Medicare file5,251 of 7,238 · 72.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file3,584 · 49.5% here, 61.4% nationally
  • Not updated in five years or more3,434 · 47.4% here, 55.4% nationally
  • Median graduation year2003 · the 3,580 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

7,238 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in Illinois: 58 per 100,000 residents against 44 nationally (50 states and D.C.). Chicago has 2,867 of them (40%).

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. Pennsylvania7,300
  2. Massachusetts6,825
  3. Michigan5,735
  4. Texas9,175

States with a similar rate per 100,000

  1. Delaware58.1
  2. New York61.7
  3. Hawaii62.9
  4. Maryland63.2

The largest states

  1. California17,696
  2. New York12,067
  3. Florida10,151
  4. Texas9,175
  5. Pennsylvania7,300

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.