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 22 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. Petya Chalakova, MDChicago, IL 606571902929383
  2. Shyam Chalise, M. D.Chicago, IL 606571245487008
  3. Pragathi Challa, MDOrland Park, IL 604621033116066
  4. Robert Chalupczak, M.D.Oak Lawn, IL 604531679505051
  5. Daniel Chamberlain, MDRockford, IL 611141396833307
  6. Timothy Chamberlain, M.D.Prophetstown, IL 612771598835837
  7. Jason Chamberlin, DOFarmington, IL 615311831207349
  8. Bradley Chambers, D.OPeoria, IL 616371376838326
  9. Kristen Chambers-Damm, M.D.Peoria, IL 616151447485693
  10. David Chan, M.D.Chicago, IL 606091629279948
  11. Hoyee Chan, MDBuffalo Grove, IL 600891336208297
  12. Maria Rhodora Chan, M.D.Oak Forest, IL 604521760770481
  13. Michelle Chan, DOChicago, IL 606121629717293
  14. Shu Yen ChanChicago, IL 606401922788751
  15. Naresh Chandan, DOKankakee, IL 609011811094550
  16. Manu Chander, MDDeerfield, IL 600151932268893
  17. Paras Singh Chandi, MDChicago, IL 606121376387548
  18. Anisha ChandiramaniChicago, IL 606371710390497
  19. Breanna Chandler, MDChicago, IL 606371053115147
  20. Gopika Chandra, MD, PHDChicago, IL 606141104114826
  21. Sandeep Chandra, M.D.Burbank, IL 604591063453876
  22. Suvrat Chandra, DOBurbank, IL 604591417584657
  23. Vinodkumar Chandrasekaran, MDUrbana, IL 618011265874838
  24. Andrew Chang, MDUrbana, IL 618011477291334
  25. Douglas Chang, M.D.Elgin, IL 601231447393616
  26. Kevin Chang, MDChicago, IL 606371518359298
  27. Ashley Chang-Story, MDChicago, IL 606081699694109
  28. Harminder Chani, M.D.Danville, IL 618321174636161
  29. Vittal Chapa, MDVirden, IL 626901003805151
  30. Margaret Chapman, M.D.Chicago, IL 606111164748471
  31. Nikil Chari, DOOak Lawn, IL 604531730983495
  32. Michael Charles, M.D.Chicago, IL 606121093126344
  33. Gomez Charleston, MDChicago, IL 606171124021795
  34. David Charman, M.D.Buffalo Grove, IL 600891346228954
  35. Mark Charman, M.D.Buffalo Grove, IL 600891033197637
  36. Sarnit Charnond, M.D.Alton, IL 620021497868491
  37. Loren Chassels, D.O.Highland, IL 622491528147444
  38. Chandra Chataut, MDChicago, IL 606121558305300
  39. Sanjay Chatrath, DOWilmington, IL 604811861591711
  40. Emily Chatskis, MDChicago, IL 606401790771434
  41. Tulika Chatterjee, MDPeoria, IL 616371568815660
  42. Eladio Chatto, MDRosiclare, IL 629821376543702
  43. Gaurav Chaturvedi, MDPark Ridge, IL 600681396778858
  44. Aashutosh ChaudharyMcHenry, IL 600501497694822
  45. Bilal Chaudhry, M.D.Springfield, IL 627691649223736
  46. Samina Chaudhry, M.D.Palos Heights, IL 604631467487884
  47. Rabiya ChauhanSpringfield, IL 627021801784178
  48. Adrianna Chauncey, M.D.Oak Park, IL 603021578852562
  49. Malini ChavaliPeoria, IL 616031245311778
  50. Arturo Chavarria, M.D.Palos Heights, IL 604631639283955

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.