NPPES file of Aug 9, 2026

Gastroenterology Physician in Illinois

887 NPPES records list gastroenterology physician with a practice address in Illinois, 7.1 per 100,000 residents, the 11th highest rate of 51. Chicago and Maywood have the most; each record links to the provider's NPI and the Illinois license search. Page 8 of 18.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RG0100X · 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, 278

  1. Chicago278
  2. Maywood41
  3. Rockford25
  4. Springfield25
  5. Aurora23

Gastroenterology Physician records in Illinois

  1. Steven Ikenberry, M.D.Rockford, IL 611071336135540
  2. Michelle Ishaya, DONiles, IL 607141154996924
  3. Khondker Islam, MDDecatur, IL 625211568441855
  4. Amanda Israel, MDChicago, IL 606371104303296
  5. Stuart Issleib, MDLa Grange Highlands, IL 605251497740393
  6. Diego Izquierdo Veraza, MDChicago, IL 606121801526660
  7. Jeffrey Jacobs, M.D.Herrin, IL 629481174524136
  8. Dinesh Jain, M.D.Naperville, IL 605401003857103
  9. Roshni Jain, MDHighland Park, IL 600351174085468
  10. Omar Jamil, MDChicago, IL 606371275026197
  11. Sujit Janardhan, M.D., PH. D.Burr Ridge, IL 605271902062037
  12. David Jandura, MDArlington Heights, IL 600051992199947
  13. Bhairvi Jani, MDMcHenry, IL 600501871931758
  14. Katherine JanikeChicago, IL 606071063041549
  15. David Jarava, M.D.Chicago, IL 606221295261253
  16. Katherine Jelinek, M.D.Geneva, IL 601341750468591
  17. Basant Jhawar, M.D.Joliet, IL 604351205878048
  18. Claudia Johnson, M.D.Chicago, IL 606171992805782
  19. Yolandra Johnson, MDKenilworth, IL 600431326030511
  20. Daniel Jonas, M.D.Arlington Heights, IL 600051720519598
  21. Blake Jones, M.D.Evanston, IL 602011386023679
  22. Sunil Joseph, MDElgin, IL 601231982716098
  23. Kabir Julka, M.D.Aurora, IL 605061548473143
  24. Lyn Sue KahngChicago, IL 606121508979410
  25. Peter Kahrilas, MDChicago, IL 606111528098688
  26. Shilpa Kailas, M.D.Chicago, IL 606371104359454
  27. Sujatha Kailas, MDChicago, IL 606601861473936
  28. Neha Kaiser, DOSycamore, IL 601781992110126
  29. Robert Kaiser, M.D.Homewood, IL 604301255362000
  30. Gaurav Kakked, MBBSChicago, IL 606121396276853
  31. Samir Kakodkar, M.D.Niles, IL 607141164716577
  32. Stephanie Kalant, D.OAurora, IL 605041174900997
  33. Eric Kallwitz, M.D.Chicago, IL 606121275716607
  34. Amit Kalra, M.D.Gurnee, IL 600311215120274
  35. Nikhil Kalva, M.DPeoria, IL 616371255524419
  36. Perry Kamel, MDChicago, IL 606141174522866
  37. Mary Kane, MDSouth Barrington, IL 600101023090354
  38. Jennifer Kang, M.D.Niles, IL 607141821521766
  39. Matthew Kaplan, DOBourbonnais, IL 609141285863308
  40. Mitchell Kaplan, M.D.Arlington Heights, IL 600051760536130
  41. Saurabh Kapur, MDChicago, IL 606111558569186
  42. Joseph Karacic, MDChicago, IL 606111992798417
  43. Ahmad Karadaghy, M.D.Alton, IL 620021619963063
  44. Shakil Karim, D.O.Rockford, IL 611041720039019
  45. Peter Karras, M.D.Springfield, IL 627031114025566
  46. Christopher Kasia, M.D.Chicago, IL 606371346602778
  47. Olufemi Kassim, M.D.Maywood, IL 601531174961999
  48. Darren Kastin, M.D.Naperville, IL 605401164402244
  49. Kashyap Katwala, MDNaperville, IL 605401194791194
  50. Suman Kaur, MDHinsdale, IL 605211184624678

Source: CMS NPPES, primary taxonomy 207RG0100X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 11 of 51 per resident

  1. Minnesota8.0
  2. New Jersey7.9
  3. New Hampshire7.8
  4. Illinois7.1
  5. Washington6.8
  6. Florida6.7
  7. 50 states and D.C.6.2

Source: CMS NPPES, primary taxonomy 207RG0100X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

85.3% of these records appear in a Medicare file, against 84.4% 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. Illinois85.3%
  2. United States84.4%

Gastroenterology Physician records in Illinois, measured

  • In a Medicare file757 of 887 · 85.3% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file643 · 72.5% here, 73.7% nationally
  • Not updated in five years or more436 · 49.2% here, 55.6% nationally
  • Median graduation year2003 · the 643 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RG0100X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

887 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in Illinois: 7.1 per 100,000 residents against 6.2 nationally (50 states and D.C.). Chicago has 278 of them (31%).

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. Ohio741
  2. New Jersey735
  3. Pennsylvania1,049
  4. Massachusetts686

States with a similar rate per 100,000

  1. Washington6.8
  2. Florida6.7
  3. Missouri6.7
  4. Oregon6.6

The largest states

  1. California2,140
  2. New York1,797
  3. Florida1,513
  4. Texas1,478
  5. Pennsylvania1,049

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.