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 145 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. Tiange Zhang, MDMaywood, IL 601531538798061
  2. Grant ZhaoChicago, IL 606571730851213
  3. Rui Zhao, MDChicago, IL 606121952034464
  4. Tina Zheng, MD, PHDChicago, IL 606371316630387
  5. Veronica ZhengChicago, IL 606111780298844
  6. Alexander Zheutlin, MDChicago, IL 606111538629860
  7. Anita Zhou, BSA, MDMaywood, IL 601531417750993
  8. Philip Zhou, MDChicago, IL 606371801525050
  9. Tingting Zhou, MDHinsdale, IL 605211336527654
  10. Mengou Zhu, MDChicago, IL 606111780333641
  11. Tina Zhu, M.D.Chicago, IL 606131043660350
  12. Fatlind Zhuta, M.D.Chicago, IL 606161205124617
  13. Michael Zia, M.D.Decatur, IL 625261689631657
  14. Sameena Ziauddin, MDOak Forest, IL 604521437218732
  15. David Zich, MDChicago, IL 606111013022565
  16. Michael Zielinski, M.D.Chicago, IL 606111316954134
  17. Sarah Zielsdorf, M.D., M.S.Maywood, IL 601531679849871
  18. Robert Zimmanck, MDPark Ridge, IL 600681053348482
  19. Haley ZimmermanChicago, IL 606121023697281
  20. Laura Zimmermann, M.D.Chicago, IL 606221427205186
  21. Lori Zimmers, M.D.St Charles, IL 601741588734818
  22. Jessica ZimoChicago, IL 606111346827490
  23. Eduard Zinger, MDLincolnwood, IL 607121346276656
  24. Maria Zipp, M.D.Park Ridge, IL 600681588741805
  25. Anna ZismanChicago, IL 606371437317740
  26. Argiro Zofakis, M.D.Chicago, IL 606541124038815
  27. Tina ZofakisChicago, IL 606591023347135
  28. Nicole Zoghby, DOChicago, IL 606251427984558
  29. Tatheer Zohra, M.DDecatur, IL 625211457614430
  30. Eyas Zorub, DOOak Lawn, IL 604531174271472
  31. Mustafa ZubairiSpringfield, IL 627011578311916
  32. Sana Zuberi, M.DChicago, IL 606401194046417
  33. Nausheen Zufishan, MDHarvey, IL 604261316292444
  34. Amjad Zureikat, MDChicago, IL 606251942255377
  35. Russell Zwolinski, MDChicago, IL 606131881168250
  36. Michelle Zydeck, DOPark Ridge, IL 600681346034436
  37. Alketa Zyka, DOKankakee, IL 609011568084523
  38. Joseph ZywicielBerwyn, IL 604021073372074

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.