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 140 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. Jessica White, M.D.Minonk, IL 617601902048986
  2. Karen Whitehorn, MDFlossmoor, IL 604221972535102
  3. Michaela WhitelawChicago, IL 606121629723218
  4. Grant Whitmer, MDChicago, IL 606111225511678
  5. Stephen Whitmore, MDChicago, IL 606491699761551
  6. Elena WhitneyChicago, IL 606371780526350
  7. Daniel Whorf, MDMaywood, IL 601531922757475
  8. Janis Wiener, MDOak Park, IL 603011750315586
  9. Marc Wiener, M.D.Carol Stream, IL 601881861435927
  10. Venetia Wijayakumar, M.D.Chicago, IL 606161801150933
  11. Andrew Wilbur, MDChicago, IL 606111750083259
  12. Lauren Wilch, MDChicago, IL 606121144018060
  13. Tracie Wilcox, M.D.Elmhurst, IL 601261790995009
  14. Bart Wilder, DOChicago, IL 606121477283240
  15. Cheryl Wilkes, MDChicago, IL 606111770591364
  16. William Will, M.D.Tinley Park, IL 604771568471860
  17. Kaitlin Willham, M.D.Evanston, IL 602011073891990
  18. Allen Williams, MDRockford, IL 611141073601324
  19. Avia Williams, MDChicago, IL 606081093513772
  20. Devin Williams, MDMaywood, IL 601531801474176
  21. Dimeji Williams, MDChicago, IL 606171124645114
  22. Don Williams, MDOak Park, IL 603011447288287
  23. Lauren Williams, M.D.Chicago, IL 606121902048267
  24. Nidha WilliamsChicago, IL 606111043004070
  25. Takayla Williams, DO TAKAYLA WILLIAMSChicago, IL 606281962158055
  26. Vanessa Williams, M.D.Springfield, IL 627021306297130
  27. Veronica Williams, MDMaywood, IL 601531700536703
  28. Byron Williamson, DOMarion, IL 629591518915081
  29. Gail Williamson, MDCanton, IL 615201376597732
  30. Joel Wilsnack, M.D.Chicago, IL 606031427083062
  31. Alan Wilson, MDChicago, IL 607071487732384
  32. Gregory Wilson, M.D.Chicago, IL 606121831884790
  33. Jordann Wilson, MDChicago, IL 606371417751686
  34. Kathryn WilsonBloomington, IL 617011568471241
  35. Paulette Wilson, M.D.Chicago, IL 606141558475657
  36. Rachel Wilson, M.D.Chicago, IL 606121912358425
  37. Rebecca Wilson, D.O.Burbank, IL 604591538620950
  38. Robert Wilson, D.O.Chicago, IL 606021932501954
  39. Tee Wilson, M.D.Chicago, IL 606151649351016
  40. Maung Win, MDManteno, IL 609501639236599
  41. Alexander Wind, MDWinnetka, IL 600931881337418
  42. Robin Wind, M.D.Winnetka, IL 600931265427546
  43. Alvin Winer, MDDeerfield, IL 600151326077793
  44. Robert Winiecki, M.D.Lisle, IL 605321215985155
  45. David Winograd, D.O.Mattoon, IL 619381144337767
  46. Christian Wirawan, DOChicago, IL 606081386394575
  47. Lexy Wistenberg, M.D.Morton Grove, IL 600531750389201
  48. Steven Witzel, MDVernon Hills, IL 600611922064641
  49. Thomas Woike, D.O.Gurnee, IL 600311700024411
  50. Maria Wojnarska, M.D.Glenview, IL 600261801958947

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.