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 94 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. Ishrat Osman, M.D.Chicago, IL 606251992711808
  2. Kashif Osmani, MDChicago, IL 606121043954407
  3. Diana Osmanovic, DOAddison, IL 601011386919728
  4. Ewa Osolkowski, MDChicago, IL 606121174637326
  5. Tomasz Osolkowski, MDChicago, IL 606121598879710
  6. Amanda Osta, MDChicago, IL 606121437281391
  7. Gregory Ostrom, M.D., PH.D.Elgin, IL 601201376782870
  8. Arthur Ostrowski, M.D.Barrington, IL 600101740257062
  9. Eva Ostrowski, M.D.Barrington, IL 600101225005820
  10. Gene OsuohaChicago, IL 606121558081620
  11. Jennifer Ota, MDGreat Lakes, IL 600881891779146
  12. Ahmad Otoom, MDChicago, IL 606571326921552
  13. Albara Ottman, MDMaywood, IL 601531538588447
  14. James Otto, M.D.Chicago, IL 606111295835452
  15. Natalie Otto, MDChicago, IL 606121144985417
  16. Rukayat Otulana, MDRockford, IL 611071013651074
  17. Christopher Oustwani, M.D.Oak Park, IL 603021497193411
  18. Joshua Owen, MDChicago, IL 606111174044077
  19. Robert Owens, M.D.Chicago, IL 606191598707481
  20. Dorothy Owusu, M.DChicago, IL 606121780830836
  21. Babadele Oyedepo, MDChicago, IL 606401225267305
  22. Oluwaseun OyekuChicago, IL 606121063268878
  23. Julie OylerChicago, IL 606371740490051
  24. Brent Ozaki, M.D.Chicago, IL 606121821479023
  25. Gregory Ozark, MDMaywood, IL 601531558337840
  26. Mevlut Ozmen, M.D.McHenry, IL 600501578318606
  27. Erin OzminkowskiRockford, IL 611141013586064
  28. Chioma Ozoalor, M.D.Urbana, IL 618011437031788
  29. Danilo Pacheco, MDOak Forest, IL 604521063570885
  30. Suvidya Lakshmi Pachigolla, MDChicago, IL 606401700560356
  31. Jeena Padath, M.DNorthfield, IL 600931801152111
  32. Jason Paek, DOEvanston, IL 602011437848959
  33. Sailokesh Pagadala, DOBurbank, IL 604591275152167
  34. Aparna Pai, M.D.New Lenox, IL 604511790865277
  35. Shaila Pai Verma, MDChicago, IL 606121174551170
  36. Wonbeom Paik, MD, PHDMaywood, IL 601531811573371
  37. Phillip Painter, MDBridgeview, IL 604551649203464
  38. Elizabeth Paisley, M.D., PH.D.Springfield, IL 627021083717540
  39. Riddhi Pakrasi, M.D.Bolingbrook, IL 604401114283215
  40. Joanna Pakula, M.D.Park Ridge, IL 600681073779740
  41. Abhishek PalChicago, IL 606571215721253
  42. Indra PalStreator, IL 613641740366004
  43. Liana Palacci, D.O.Chicago, IL 606111861415291
  44. Asma Nazneen PalagiriChicago, IL 606081407470289
  45. Keerthana Palaniappa Sivakolundu, M.DPeoria, IL 616371053055459
  46. Renata Palasiewicz, D.O.Chicago, IL 606121962745737
  47. Yoana Palatianos De Araujo, M.D.McHenry, IL 600501033967591
  48. Peter Palermo, MDHoffman Estates, IL 601691881680387
  49. Eric Pales, M.D.Park Ridge, IL 600681508938507
  50. Robert Palinkas, M.D.Urbana, IL 618011174669212

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.