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 111 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. Earl Rudolph, D.O.Marion, IL 629591487851481
  2. Harsha Rudrappa, MDEvanston, IL 602021295929628
  3. Ronald Ruecker, MDDecatur, IL 625261275565806
  4. Ivana Ruffolo, M.D.Lake Bluff, IL 600441861409351
  5. Edward Rufus Jr, MDPeoria, IL 616141871597450
  6. Brian Ruiz, M.D.East Carondelet, IL 622401821173154
  7. Gretel Ruiz Jorge, M.D.Chicago, IL 606231427289859
  8. Helene Ruiz Pla, MDMelrose Park, IL 601601922171750
  9. Gary Rull, M.D.Springfield, IL 627021154306017
  10. James Runke, M.D.Chicago, IL 606011952425035
  11. James Rupp, MDMaywood, IL 601531780658815
  12. Thomas Ruppert, M.D.Chicago, IL 606411538332564
  13. Sara Rusch, MDPeoria, IL 616371043288681
  14. Jennifer RusieckiChicago, IL 606371851680037
  15. Christopher Russell, M.D.Bloomington, IL 617011174194351
  16. Hugh Russell, MDChicago, IL 606191881746345
  17. Patricia Russell, M.D.River Forest, IL 603051477729507
  18. Naser Rustom, MDChicago, IL 606251154374171
  19. Benjamin Ryabov, DOMcHenry, IL 600501902745474
  20. Yakov Ryabov, MDWheeling, IL 600901912909615
  21. Diane Ryan, M,D.Chicago, IL 606121932473824
  22. Jeffrey Ryan, M.D.Chicago, IL 606121386744316
  23. Lisa Ryan, MDChicago, IL 606521710207444
  24. Mary Rybak, MDBelleville, IL 622261962665059
  25. Mina Ryu, M.D.Evanston, IL 602011669484861
  26. Angela Saab, MDSpringfield, IL 627021427893346
  27. Maged Saad, MDHinsdale, IL 605211154634145
  28. Sabaa Saad-Omer, MDChicago, IL 606121841183613
  29. Tirajeh Saadatzadeh, M.D., M.S., B.A.Chicago, IL 606111629425202
  30. Harry Saag, MDChicago, IL 606071295096360
  31. Maria Saavedra, M.D.Normal, IL 617611972950103
  32. Haissam Sabbagh, MDLa Grange, IL 605251194836924
  33. Sadia Sabieh, M.D.Evanston, IL 602021811226384
  34. Bradley Sabin, M.D.Chicago, IL 606111922277292
  35. Maryam Sabir, MDMaywood, IL 601531003510314
  36. Abdul Saboor, M.D.Kankakee, IL 609011770654725
  37. Matthew Sacco, STUDENTMaywood, IL 601531144922584
  38. Ryan SacharChicago, IL 606371083351878
  39. Amitoj Sachdeva, MDPeroria, IL 616371255953006
  40. Martin Sachman, MDNorthbrook, IL 600621629186846
  41. Jonathan Sachs, MDAurora, IL 605061912101866
  42. David Sachtleben, MDWestmont, IL 605591861450447
  43. Michael SadekOak Park, IL 603021003445222
  44. Unknown Sadhu Aishwarya Reddy, MBBSMcHenry, IL 600501861288854
  45. Raja Irfan Sadiq, M,D.Danville, IL 618321316142755
  46. Shamim Sadiq, M.D.Urbana, IL 618011801862461
  47. Laura Sadowski, MDChicago, IL 606121598703225
  48. Yama Sadozai, MDSkokie, IL 600761841874146
  49. Mohammed Saed, MDMorris, IL 604501669964441
  50. Abdullah SaeedChicago, IL 606121457242992

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.