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 11 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. Aamir Aziz, MDChicago, IL 606371073302535
  2. Abdul Aziz, MDWaukegan, IL 600851942290754
  3. Mubbashira AzizNorth Chicago, IL 600641477932812
  4. Sumbal Aziz, MDChicago, IL 606401427618180
  5. Shazia Azmat, MDChicago, IL 606571700231420
  6. Rachel Azriel, MDGurnee, IL 600311831775204
  7. Walten Baba, M.DChicago, IL 606251649217985
  8. Marcin Baber, M.D.Lombard, IL 601481992918510
  9. Daniel Babiar, MDOak Lawn, IL 604531497559728
  10. Christopher Babiarz, MDChicago, IL 606121851134084
  11. Emad BabikerChicago, IL 606121740106053
  12. Phanivardhan Babireddy, M.DMelrose Park, IL 601601598067522
  13. Mila C Bacalla, MDChicago, IL 606221942288550
  14. Leroy Bach, MDRockford, IL 611041225198674
  15. Fida Bachour, MDLombard, IL 601481962439927
  16. Craig Backs, M.D.Springfield, IL 627041124043252
  17. Edward Badal, M.D.Gurnee, IL 600311497070940
  18. Ravi Badlani, M.D.Chicago, IL 606141790758944
  19. Sameer Badlani, MDChicago, IL 606371699795302
  20. Susan Badri, M.D.Downers Grove, IL 605151912985722
  21. Irisha Badu, MDChicago, IL 606401194210179
  22. Marwan Baghdan, MDHazel Crest, IL 604291669487310
  23. Amritpal Bahga, MDChicago, IL 606371255060737
  24. Nadine Bahlawan, DO, MAChicago, IL 606251295583458
  25. Murtuza Bahrainwala, MDForsyth, IL 625351871590679
  26. Mohamad Bahrou, MDSpringfield, IL 627021417799693
  27. Arshiya BaigChicago, IL 606371265639595
  28. Athar Baig, MDOttawa, IL 613501649852492
  29. Sameera Baig, MDSouth Holland, IL 604731700413887
  30. Kathy Bailey, M.DMorton Grove, IL 600531235136961
  31. Alan Bain, D.O.Park Ridge, IL 600681477695286
  32. Rushim Bains, MDKildeer, IL 600471154334316
  33. John Baird, MDGlen Ellyn, IL 601371851555619
  34. Vijay Bajaj, M.D.Palos Hills, IL 604651508997982
  35. Melissa BakChicago, IL 606111609488386
  36. Deepak BakaneNew Lenox, IL 604511780766097
  37. Abraham BakerMaywood, IL 601531104404748
  38. Catherine Baker, MDLemont, IL 604391871609354
  39. David Baker, MDChicago, IL 606111124098066
  40. Dustyn Baker, M.D.Chicago, IL 606371689821704
  41. Elizabeth Baker, M.D.Chicago, IL 606121710089776
  42. Elliot Baker, M.D.Lincolnwood, IL 607121669718896
  43. Howard Baker, D.O.Vernon Hills, IL 600611558326439
  44. Matthew Baker, MDPark Ridge, IL 600681215610498
  45. Richard Baker, D.O..Long Grove, IL 600471720148000
  46. Thomas Baker, M.D.Jacksonville, IL 626501679744221
  47. Avinash Bakhtiarpuri, MDChicago, IL 606401497641070
  48. Carl Bakken, MDArlington Heights, IL 600041821023243
  49. Massarat Bala, M.D.Schaumburg, IL 601731730196833
  50. Bharat Balan, MD, MSChicago, IL 606111689258642

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.