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 3 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. Shishira Bharadwaj, MDMaywood, IL 601531457587172
  2. Nikhil Bhargava, DOBourbonnais, IL 609141568649382
  3. Arvin Bhatia, MDGeneva, IL 601341841446788
  4. Harish Bhatia, M.D.Oak Forest, IL 604521003996794
  5. Motilal Bhatia, M.D.Hazel Crest, IL 604291134211956
  6. Manish Bhuva, M.D.Lake Barrington, IL 600101518953330
  7. Laura Bianchi, MDEvanston, IL 602011932231115
  8. Benjamin Bick, MDDes Plaines, IL 600161508151911
  9. Paul Bierman, MDHarvey, IL 604261144245234
  10. Mary Biglin, MDChicago, IL 606121053840991
  11. Wojciech Blogowski, MDChicago, IL 606121568927226
  12. Ronald Bloom, MDGlenview, IL 600261659353779
  13. Lauren BloombergNorthbrook, IL 600621336776475
  14. Brian Blumenstein, MDOak Lawn, IL 604531194784645
  15. Syed Bokhari, M.D.Bourbonnais, IL 609141710984224
  16. Richard Bone, M.D.Chicago, IL 606431407887938
  17. Monica Borkar, MDGlenview, IL 600261053353169
  18. Shyamal Bose, M.D.Steger, IL 604751649362443
  19. Brian Boulay, MDChicago, IL 606121023103439
  20. Christine Boumitri, M.DChicago, IL 606111992050702
  21. Christopher Boutin, MDElmhurst, IL 601261760440259
  22. Harold Boutte, M.D.Chicago, IL 606111487911038
  23. John Boydstun, M.D.Galesburg, IL 614011316040553
  24. Nadia Bozanich, M.D.Hazel Crest, IL 604291679911549
  25. John Bozdech, MDQuincy, IL 623011841279213
  26. Jeffrey Brasky, D.O.Niles, IL 607141891976981
  27. Andrew Bregman, MDGeneva, IL 601341982680013
  28. Darren Brenner, M.D.Chicago, IL 606111003997875
  29. Joseph Bresnahan, M.D.Riverside, IL 605461710925532
  30. Sophie Brigstocke, MDChicago, IL 606111558928630
  31. David Bromberg, M.D.Chicago, IL 606111942542618
  32. Michael Brown, M.D.Chicago, IL 606121265477293
  33. Russell Brown, M.D.Chicago, IL 606121154426559
  34. Charles Broy, M.D.Maywood, IL 601531952449340
  35. Keith Bruninga, M.D.Chicago, IL 606121881638823
  36. Alan Buchman, MDSkokie, IL 600761104885557
  37. Sarosh Bukhari, D.O.Park Ridge, IL 600681306092648
  38. Sarah Burroughs, DOEvanston, IL 602011447755434
  39. David Butler, M.D.Chicago, IL 606081083821037
  40. Jennifer Cahill, M.D.Arlington Heights, IL 600051952643405
  41. Jennifer Cai, M.D.Chicago, IL 606111972833796
  42. Carl CalandraHinsdale, IL 605211366527418
  43. Dustin Carlson, M.D.Chicago, IL 606111902139173
  44. Robert CarrollChicago, IL 606121457465262
  45. Deborah Carsten, L.C.S.WWestmont, IL 605591083036792
  46. Michael Cashman, M.D.Peoria, IL 616041881635605
  47. Michael Cassaday, D.O.Moline, IL 612651427050673
  48. Samuel Castillo, M.D.Chicago, IL 606221205801313
  49. Samuel Castillo, M.D.Chicago, IL 606221467503672
  50. Gerard Cerniak, M.D.Joliet, IL 604311003587049

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.