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 2 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. Carl Atallah, DOChicago, IL 606571922269190
  2. Tamer Atassi, M.D.Joliet, IL 604351548276819
  3. George Atia, M.D.Barrington, IL 600101770580029
  4. David Atlas, M.D.Chicago, IL 606171952375636
  5. Sreedevi Atluri, M.D.Chicago, IL 606111881942886
  6. Bashar Attar, MDChicago, IL 606121790795664
  7. Mary Atten, M.D.Chicago, IL 606121164436887
  8. Alan Auerbach, M.D.Buffalo Grove, IL 600891902913759
  9. Alexis Ayonote, M.D.Mattoon, IL 619381013023449
  10. Malek Ayoub, MDChicago, IL 606371609510981
  11. Kamran Ayub, MDOak Lawn, IL 604531942317243
  12. Asad Aziz, D.O.Hoffman Estates, IL 601691538140082
  13. Saad Aziz, D.O.Chicago, IL 606471629259890
  14. Muaataz AzzawiSpringfield, IL 627021124551577
  15. Nabil Baddour, D.O., MPHRockford, IL 611071184018178
  16. Hasan Bader, M.D.Rockford, IL 611071275989998
  17. Ajay Bajaj, MDBurbank, IL 604591518943513
  18. Arouj Bajwa, MDMaywood, IL 601531730683871
  19. Purnima Balachandran, MDChicago, IL 606121659318509
  20. Terry Baldwin, M.D.Peoria, IL 616061346276284
  21. Darren Ballard, M.D.Homewood, IL 604301467652560
  22. Sanjay Bangarulingam, MBBSSpringfield, IL 627011952408734
  23. Amar Bansal, M.D.Aurora, IL 605061710929716
  24. John Barbagiovanni, DOQuincy, IL 623011437138781
  25. David BarchChicago, IL 606181447765888
  26. Robert Barclay, M.D.Rockford, IL 611071073509337
  27. Elizabeth Barczynski, MDElmhurst, IL 601261942250071
  28. Sameer Barkatullah, M.D.Bolingbrook, IL 604401245426980
  29. Vikram Barpujari, M.D.Decatur, IL 625211396729190
  30. Dona Bartelt, M.D.Lake Barrington, IL 600101629063201
  31. William Baskin, M.D.Rockford, IL 611071063408342
  32. Andrew Batey, MDUrbana, IL 618011225068463
  33. Charles Baum, MDAddison, IL 601011881626570
  34. Alexandra Baumann, D.O.Chicago, IL 606111124380332
  35. Nicholas BaurOlympia Fields, IL 604611144783309
  36. Mohammad Bawani, MDLibertyville, IL 600481407858152
  37. Agata Bednarz, M.D.Maywood, IL 601531477671527
  38. Ami Behara, M.D.Mt Prospect, IL 600561336301027
  39. Emanuelle Bellaguarda, M.D.Chicago, IL 606111699919324
  40. Yuliya Belopolsky, MDPeoria, IL 616051467980011
  41. Aaron Benson, M.D.Mt Prospect, IL 600561164508453
  42. Richard BenyaChicago, IL 606121568567998
  43. Daniel Berger, M.D.Chicago, IL 606571073950390
  44. Scott Berger, M.D.Naperville, IL 605401366483455
  45. Mitchell Bernsen, M.D.Arlington Heights, IL 600051275523631
  46. Allen Bernthal, M.D.Berwyn, IL 604021710967989
  47. Stephanie Betcher, MDMaywood, IL 601531639674476
  48. Suresh Bhalla, MDJoliet, IL 604351811995426
  49. Abhishek Bhandari, M.D.Naperville, IL 605401194092031
  50. Sidharth Bhandari, D.O.Naperville, IL 605401871941435

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.