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 138 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. Nathan Walker, M.D.Champaign, IL 618221629087325
  2. Valerie Walker, M.D.Chicago, IL 606431225262926
  3. Warren Wallace, MDChicago, IL 606121801811831
  4. Gregory Wallman, DOGlenview, IL 600261043324643
  5. Elisabeth Wallner, M.D., M.P.H.Chicago, IL 606111912919440
  6. Patricia Walsh, M.D.Chicago, IL 606571700835071
  7. Nigel Walters, MDMount Prospect, IL 600561326073750
  8. Renee Walters, D.OKankakee, IL 609011942645486
  9. Ashley Wang, M.D.Chicago, IL 606571639391618
  10. Benjamin Wang, MD PHDCalumet City, IL 604091962496182
  11. Derek Wang, MDSpringfield, IL 627021225870710
  12. Edward Wang, M.D.Chicago, IL 606161982806279
  13. Franchot Wang, M.D.North Chicago, IL 600641104840263
  14. John Wang, MDChicago, IL 606111508569542
  15. Joy Wang, MDChicago, IL 606121740785971
  16. Lyon Wang, MDChicago, IL 606121790365559
  17. Qian WangChicago, IL 606081962842633
  18. Stanley Wang, M.D.Chicago, IL 606371659533867
  19. Victoria Wang, MDChicago, IL 606371043960982
  20. Wenfei Wang, MDChicago, IL 606371326578816
  21. Yanting Wang, MDChicago, IL 606071134640956
  22. Emmy WanjikuChicago, IL 606111184326076
  23. Ayesha Waqar, M.DPeoria, IL 616371205216876
  24. Danish WaqarChicago, IL 606401558094094
  25. Saad Waraich, M.DMcHenry, IL 600501013599182
  26. Romuald Warakomski, D.O.Flossmoor, IL 604221427153618
  27. Clifton Ward, MDChicago Heights, IL 604111871797258
  28. Elizabeth Ward, M.D.Evanston, IL 602011992083513
  29. Jacob Ward, MDSpringfield, IL 627021164214946
  30. Jean Wardlow, MDMoline, IL 612651316984313
  31. Hasanki Warnakula, MDPeoria, IL 616371851928204
  32. Muhammad Sheharyar Warraich, MDChicago, IL 606121023626611
  33. Carole Warshaw, MDChicago, IL 606021780611400
  34. Paul Warshawsky, MEDICAL DOCTORSkokie, IL 600771083723159
  35. Richard Warshell, MDChicago, IL 606591336119163
  36. Syed Shah Warsi, MDAurora, IL 605061255386538
  37. Noah WassermanChicago, IL 606111063049146
  38. Tova Wasserman-Bruck, MDChicago, IL 606371477306157
  39. Megan WaszOak Lawn, IL 604531588059679
  40. Martin Watanabe Tejada, MDChicago, IL 606571265286934
  41. Cory Watrous, M.D.Chicago, IL 606121356439129
  42. Jonathan WatsonChicago, IL 606121447048467
  43. Bennett Waxse, MD, PHDChicago, IL 606371144750324
  44. Catherine Waymel, MDChicago, IL 606371508486564
  45. Diane Wayne, MDChicago, IL 606111023041258
  46. Hesham Wazwaz, MDOak Lawn, IL 604531912981242
  47. A. Charlotta Weaver, MDChicago, IL 606111124206156
  48. Christine Weaver, M.D.Urbana, IL 618011225130305
  49. Stephanie Weaver, M.D.Chicago, IL 606111942316229
  50. David Webb, MDMahomet, IL 618531619075017

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.