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 141 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. Wieslaw Wojnarski, M.D.Glenview, IL 600261366504649
  2. Saba Woldegabre, MDChicago, IL 606081811556152
  3. Bernard Wolf, D.O.Aurora, IL 605061710995121
  4. Laurel Wolf, MDChicago, IL 606111912565722
  5. Robert Wolf, M.D.Riverwoods, IL 600151376566034
  6. Steven Wolf, M.D.Chicago, IL 606161851304117
  7. Caroline Wolfe, MDGlen Ellyn, IL 601371063473031
  8. Steven Wolfman, D.O.Northfield, IL 600931184763542
  9. Mark Wolfmeyer, M.D.Peoria, IL 616371427266279
  10. Loyd Wollstadt, M.D.Mount Morris, IL 610541356332498
  11. Yael Wollstein, MDChicago, IL 606371760125058
  12. Ryan Wolsky, DOOak Lawn, IL 604531114505377
  13. Ki Seok Won, MDEvanston, IL 602021164048179
  14. Constantine Wonais, MDNaperville, IL 605631457340267
  15. Derek WongEvanston, IL 602011750222931
  16. Sharon Wong, M.D.Libertyville, IL 600481992774301
  17. Shirley Wong, M.D.Chicago, IL 606161386738060
  18. William Wong, MDChicago, IL 606111679762900
  19. Emily WooEvanston, IL 602011356703763
  20. Joseph Eddie Woo, M.D.Oak Forest, IL 604521942423009
  21. Susan Woo, MDOak Brook, IL 605231326037714
  22. Elizabeth Woo-Strauss, M.D.Evanston, IL 602011154392645
  23. Catherine Wood, M.D.Rolling Meadows, IL 600081326266107
  24. Dana Wood, M.D.Chicago, IL 606031679592265
  25. Janice Wood, MDElgin, IL 601201740385434
  26. Asja Woodard, MDChicago, IL 606371558203778
  27. Daneen Woodard, M.D.Chicago, IL 606511295829646
  28. James WoodruffChicago, IL 606371659434173
  29. Rita Woods, MDMokena, IL 604481235136268
  30. Idelle Woodson, M.D.Springfield, IL 627031770894669
  31. Sean Woodward, MD, PHDChicago, IL 606111396357273
  32. Amber Wooldridge, MDMahomet, IL 618531700450350
  33. Ronald Workman, M.D.Chicago, IL 606181336305119
  34. Samantha Worobey, MDEvanston, IL 602011588505754
  35. Joshua Wortsman, MDChicago, IL 606081871266031
  36. Mahader Wossene, MDBerwyn, IL 604021710722400
  37. James Wright, M.D.Joliet, IL 604351760406045
  38. Kellen Wright, MDMaywood, IL 601531568164028
  39. Lester Wright, M.D.Chicago, IL 606151720190903
  40. Jennifer Wroblewski, MDUrbana, IL 618011407417926
  41. Thomas Wroblewski, MDKankakee, IL 609011891833612
  42. Alexander WuChicago, IL 606111245961630
  43. Anna Wu, M.D.Chicago, IL 606111154360253
  44. Jinjin WuChicago, IL 606081497320436
  45. Judy Wu, M.D.Chicago, IL 606121144425026
  46. Ming Wu, MDChicago, IL 606401104834043
  47. Nancy Wu, MDChicago, IL 606181831295997
  48. Raymond Wu, M.D.Evanston, IL 602011790966786
  49. Surafiel Wube, MDChicago, IL 606121790611051
  50. John WuellnerAlton, IL 620021558378927

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.