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 24 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. Irena Chizhik, M.D.Skokie, IL 600761275501579
  2. Anderson Cho, MDChicago, IL 606571710473756
  3. Eric Cho, MDPark Ridge, IL 600681356140800
  4. Ha Cho, MDForsyth, IL 625351356803480
  5. James Cho, M.D.Chicago, IL 606121194991737
  6. Janis Cho, MDArlington Heights, IL 600041366825119
  7. Lily Cho-Mui, MDEvanston, IL 602081730248691
  8. Hyun Cho-Steinberg, MDChicago, IL 606031518075001
  9. Justin Choi, MDLibertyville, IL 600481497382196
  10. Myoung Hyun Choi, MDMaywood, IL 601531962152215
  11. Yeonjoo ChoiUrbana, IL 618011386206001
  12. Krishna Chokkaram, MDChicago, IL 606171932661873
  13. Sanjna Chokshi, MDMaywood, IL 601531104610138
  14. Tatvam Choksi, M.D.Chicago, IL 606371770839987
  15. Sri Madhavi Cholleti, M.DChicago, IL 606561679758411
  16. Chris Chon, MDSkokie, IL 600761578550752
  17. Peter Chou, MDChicago, IL 606401093723868
  18. Muhammad Choudry, MDOlympia Fields, IL 604611720074701
  19. Samiullah Choudry, M.D.Joliet, IL 604351275715484
  20. Selina Chow, MDBurr Ridge, IL 605271144473190
  21. Danny Choy, D.OChicago, IL 606161376526954
  22. Siu Yung Choy, D.O.Park Ridge, IL 600681679951594
  23. Robert Chris, MDEvanston, IL 602011659857233
  24. Carroll Christie, M.D.Chicago, IL 606571023455482
  25. Eric Christoff, M.D.Chicago, IL 606261245287317
  26. Regan Christopoulos, MDGurnee, IL 600311740231596
  27. Carol Chu, MDChicago, IL 606111659445278
  28. Lendy Chu, MDChicago, IL 606371184477465
  29. Philip Chu, MDSwansea, IL 622261396797841
  30. Antonio Chua Lee, M.D.Lincolnshire, IL 600691639133671
  31. Emily ChuangEvanston, IL 602021285437962
  32. Eric Chuang, M.D.Chicago, IL 606221124140207
  33. Hsin I Chuang, MDChicago, IL 606201073521563
  34. Nirav Chudgar, MDCalumet City, IL 604091780763805
  35. Prachi ChugBerwyn, IL 604021659117802
  36. Rakesh Chugh, M.D.Tinley Park, IL 604771952455362
  37. Leenah Chughtai, M.D.Dolton, IL 604191578185591
  38. Snigda Chukka, M.D.Peoria, IL 616371366640328
  39. Vivian Chukwuma, M.D.Oak Lawn, IL 604531477129062
  40. Chinazo Chukwunenye, M.DOak Lawry, IL 604531760238927
  41. Yong Chun, MDChicago, IL 606251417968132
  42. Prameela Chunduru, MDNaperville, IL 605401619285905
  43. Eric Chung, MDChicago, IL 606471740786326
  44. Matthew Yat Hon ChungChicago, IL 606161083536783
  45. Alesia Churyla, MDChicago, IL 606181437332418
  46. Francisco Chuy, M.D.Lincolnwood, IL 607121689863029
  47. Valerie Chuy, MDChicago, IL 606121962084400
  48. Mark Chyna, M.D.Libertyville, IL 600481740273507
  49. Zbigniew Ciechanowski, M.D.St Charles, IL 601741467452573
  50. Scott Cienkus, MDNorthbrook, IL 600621972662849

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.