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 56 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. Nandhini IyerBerwyn, IL 604021073359907
  2. Vladislav Izda, MDChicago, IL 606111891598439
  3. Richard Izewski, MDSchaumburg, IL 601931306930177
  4. Mohammed Jaafar, M.D.Springfield, IL 627021396127536
  5. Dania JaamourChicago, IL 606111972228047
  6. Zaid Jabbar, M.D.Oak Brook, IL 605231730351115
  7. Sayeeda Jabeen, M.D.Springfield, IL 627691891882601
  8. Daniel Jabr, DOOak Lawn, IL 604531639873714
  9. Sangmesh Jabshetty, M.D.Aurora, IL 605041801181037
  10. Dalia Jacob, MDEvanston, IL 602011962579920
  11. Daniel JacobMount Prospect, IL 600561801213962
  12. Kavitha Jacob, M.D.Peoria, IL 616371770964736
  13. Nikhil Jacob, DOPark Ridge, IL 600681710827852
  14. Eunice Jacob-Charly, DOElgin, IL 601231689105413
  15. Lynnette Jacobs-Pupino, MDElk Grove Village, IL 600071982851432
  16. Steven Jacobsen, DOPark Ridge, IL 600681912700675
  17. Wilvens Jacques, MDOak Lawn, IL 604531164125258
  18. Puja Jadav, MDElgin, IL 601231952832115
  19. Ummarah Jaffar, MDMcHenry, IL 600501992455653
  20. Harry Jaffe, MDEvanston, IL 602011629180450
  21. Maliha Jaffery, MDDowners Grove, IL 605151174780159
  22. Mubasher Jaffri, DOEvanston, IL 602011225878531
  23. Sana Jafri, MDWinfield, IL 601901467793463
  24. Shaza Jafri, M.B.B.SUrbana, IL 618011811675168
  25. Zain Jafri, M.D.Chicago, IL 606571093382731
  26. Matthew Jager, D.O.Peoria, IL 616371356544472
  27. Farrukh Jahan, MDOak Forest, IL 604521568523439
  28. Mohammed Jahangir, M.D.Chicago, IL 606401073748422
  29. Jelveh Jahangiri, MDHines, IL 601411679676522
  30. Diana Jaime, M.D.Joliet, IL 604321144356213
  31. Harold Jaimes, M.D.Chicago, IL 606471770526279
  32. Ajay Jain, M.D.Schaumburg, IL 601941275610917
  33. Bijal Jain, M.D.Chicago, IL 606111588863245
  34. Deepanjali Jain, MDBannockburn, IL 600151477114064
  35. Dinesh Jain, M.D.Tinley Park, IL 604771255330361
  36. Keertana JainChicago, IL 606111598378457
  37. Rajneesh Jain, M.D.Staunton, IL 620881932202595
  38. Sheeja Jain, MDBolingbrook, IL 604401285722207
  39. Shishir Jain, M.D.Cicero, IL 608041811085822
  40. Sonali Jain, M.D.Chicago, IL 606571376860338
  41. Vandana Jain, MDSkokie, IL 600771730143728
  42. Adolfo Jaitovich, MDChicago, IL 606121033438973
  43. Louay Jajeh, DOEvergreen Park, IL 608051174028088
  44. Jerry Jakimiec, MDChicago, IL 606341184786196
  45. Qamar Jalil, M.D.Bartlett, IL 601031720186141
  46. Marissa Jama, DOSt Charles, IL 601741962146258
  47. Qaiser Jamal, M.D.Chicago, IL 606221730129461
  48. Lina Jamal Abdallah Ghazal, MDSouth Holland, IL 604731164050050
  49. Nicole JamesChicago, IL 606571295624088
  50. Norman James, M.D.Chicago, IL 606161639236706

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.