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 13 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. Daniel Oreilly, M.D.Palos Heights, IL 604631457325987
  2. Kenneth Oriordan, MDNiles, IL 607141912075649
  3. Peter Oshin, MDGurnee, IL 600311093732331
  4. Ayodele Osowo, MDOrland Park, IL 604621063552479
  5. George Ou, MDChicago, IL 606371770004590
  6. Tommy Pacana, M.D.Aurora, IL 605041093018285
  7. Vasantha Pai, M.DBelleville, IL 622231306921218
  8. Gregory Pajot, M.D.Chicago, IL 606571750735551
  9. Lena Palmer, M.D.Maywood, IL 601531801080460
  10. Vijeta Pamudurthy, D.O.Niles, IL 607141326429333
  11. Alexander Pan, MDChicago, IL 606111356873459
  12. Panagiotis Panagiotakis, MDMaywood, IL 601531043241292
  13. John Pandolfino, MDChicago, IL 606111396770277
  14. Theodore Paradowski, M.D.Springfield, IL 627031720171804
  15. Sudarshan Paramsothy, M.D.Chicago, IL 606371629521133
  16. Utpal Parekh, MDAddison, IL 601011285727669
  17. Mayur Parepally, M.D.Rolling Meadows, IL 600081447549787
  18. Sarah Park, MDChicago, IL 606371134689425
  19. Willis Parsons, M.D.Arlington Heights, IL 600051972578698
  20. Amit Patel, M.DChicago, IL 606121164711107
  21. Amitkumar Patel, MDMoline, IL 612651598059826
  22. Amritbhai Patel, MDChicago, IL 606571134294853
  23. Anand Patel, MDBelleville, IL 622261043503972
  24. Armani Patel, MDSkokie, IL 600761487187779
  25. Daksesh Patel, D.O.Evanston, IL 602021154526770
  26. Dhaval Patel, D.O.Bourbonnais, IL 609141992153142
  27. Harsh PatelDes Plaines, IL 600161700348828
  28. Hemal Patel, MDGeneva, IL 601341548471600
  29. Janaki PatelAurora, IL 605061205251113
  30. Jaymon Patel, M.D.Mattoon, IL 619381386084044
  31. Kishan Patel, MDWarrenville, IL 605551023677010
  32. Krishna Patel, DODes Plaines, IL 600161992159537
  33. Nalin Patel, M.D.Champaign, IL 618201467403535
  34. Ronak Patel, M.D.Chicago, IL 606111780022897
  35. Ruchi Patel, M.D.Chicago, IL 606601619317229
  36. Rupal Patel, M.D.Hazel Crest, IL 604291629412051
  37. Samir Patel, MDOak Lawn, IL 604531982664736
  38. Sunil Patel, M.D.Rockford, IL 611071699809806
  39. Tarun Patel, M.D.Orland Park, IL 604621912285255
  40. Yogesh Patel, D.O.St Charles, IL 601751538335955
  41. Sheena Patel Cooke, M.D.Hoffman Estates, IL 601691750677621
  42. John Payne, MDHinsdale, IL 605211124028360
  43. Kevin Peifer, M.D.Rockford, IL 611071699751446
  44. Donald Penn, M.D.Peoria, IL 616061780628388
  45. William Peterson, M.D.Springfield, IL 627031174623854
  46. Elena Pezzino Mora, MDChicago, IL 606111598415622
  47. Rafael Piedra, MDNaperville, IL 605401043287196
  48. Constance Pietrzak, M.D.Hazel Crest, IL 604291174788343
  49. Rajesh Pillai, MDElgin, IL 601231083836027
  50. Robert Pintozzi, M.D.Chicago, IL 606431124038401

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.