NPPES file of Aug 9, 2026

Radiation Oncology Physician in Illinois

277 NPPES records list radiation oncology physician with a practice address in Illinois, 2.2 per 100,000 residents, the 18th highest rate of 51. Chicago and Maywood have the most; each record links to the provider's NPI and the Illinois license search. Page 1 of 6.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2085R0001X · 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, 89

  1. Chicago89
  2. Maywood16
  3. Springfield13
  4. Rockford9
  5. Oak Lawn8

Radiation Oncology Physician records in Illinois

  1. Mohamed Abazeed, MD, PHDChicago, IL 606111205096609
  2. Christopher Abraham, MDSpringfield, IL 627811083900294
  3. Ross Abrams, M.D.Chicago, IL 606121356317564
  4. Iftekhar Ahmad, M.D.Rockford, IL 611081164641791
  5. Elke Aippersbach, M.D.,M.SC.,Oak Lawn, IL 604531285754895
  6. Adil Akthar, M.D.Warrenville, IL 605551598175531
  7. Neal Andruska, MD, PHDWarrenville, IL 605551972035798
  8. Sobiya Ansari, M.D.Chicago, IL 606121336554666
  9. Muzamil Arshad, MD/PHDChicago, IL 606371518429570
  10. Guhan Arumugam Shanmugasundaram, M.B.B.S.Chicago, IL 606121023800943
  11. Salwa Asaad, MDJoliet, IL 604321831170539
  12. Samuel Au, M.D.Springfield, IL 627011578565420
  13. Azhar AwanChicago, IL 606371497829725
  14. Omar Azem, MDChicago, IL 606121134708902
  15. Amishi Bajaj, MDSchaumburg, IL 601731932606654
  16. Katherine Baker, MDLisle, IL 605321558362632
  17. Daniel Barnett, M.D.Urbana, IL 618011972891257
  18. Brian Baumann, MDSpringfield, IL 627011841559945
  19. Menal BhandariMaywood, IL 601531134895758
  20. Amit BhateDekalb, IL 601151255597167
  21. Sumita Bhatia, MDAurora, IL 605041548467459
  22. Alec BlockMaywood, IL 601531124375274
  23. Brian Blonigen, M.D.Joliet, IL 604351134330426
  24. Philip Blumenfeld, M.D.Chicago, IL 606121417397449
  25. Martin Boyer, D.O.Elk Grove Vlg, IL 600071043200165
  26. Christopher Bradbury, M.D., PH.D.Springfield, IL 627811063723930
  27. Randall Brenneman, MDSpringfield, IL 627811366899841
  28. George Bryan, MDRockford, IL 611081447287495
  29. Terrence Bugno, MDMcHenry, IL 600501235163437
  30. John Burnett, M.D.Rockford, IL 611081932151420
  31. Nathaniel Camden, MDChicago, IL 606121629502208
  32. Chad Caraway, MDChicago, IL 606371306647243
  33. Matthew Carpenter, MDPeoria, IL 616361043298334
  34. Dennis Chan, MDMaywood, IL 601531679005243
  35. Sung Chang, MDZion, IL 600991609853985
  36. Linda ChenChicago, IL 606371104169515
  37. Sea Chen, M.D., PH.D.Aurora, IL 605041518113455
  38. Suzan Cheng, MDMorris, IL 604501629082722
  39. Steven ChmuraChicago, IL 606371629137161
  40. Seong Cho, MDMattoon, IL 619381811082886
  41. Julia Choo, MDAurora, IL 605041114094042
  42. Anupama Chundury, M.D., M.S.Maywood, IL 601531407199250
  43. Diana Chung, M.D.Chicago, IL 606311538150644
  44. Cathy Clausen, M.D.Springfield, IL 627691073526091
  45. Courtney Coke, MDElgin, IL 601231841224045
  46. Tonya Cole, M.D.Harvey, IL 604261164423471
  47. Joy Coleman, M.D.Libertyville, IL 600481598872111
  48. Colleen Conger, MDChicago, IL 606111255126579
  49. Philip ConnellChicago, IL 606371538228077
  50. Dean Conterato, MDLibertyville, IL 600481033110192

Source: CMS NPPES, primary taxonomy 2085R0001X: records by practice city and the list of records, file of Aug 9, 2026.

Illinois ranks 18 of 51 per resident

  1. Florida2.3
  2. New York2.3
  3. Connecticut2.3
  4. Illinois2.2
  5. Missouri2.2
  6. Vermont2.2
  7. 50 states and D.C.2.1

Source: CMS NPPES, primary taxonomy 2085R0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

78.0% of these records appear in a Medicare file, against 82.3% 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. Illinois78.0%
  2. United States82.3%

Radiation Oncology Physician records in Illinois, measured

  • In a Medicare file216 of 277 · 78.0% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file184 · 66.4% here, 74.0% nationally
  • Not updated in five years or more136 · 49.1% here, 54.6% nationally
  • Median graduation year2004 · the 184 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2085R0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

277 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in Illinois: 2.2 per 100,000 residents against 2.1 nationally (50 states and D.C.). Chicago has 89 of them (32%).

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. Ohio298
  2. Massachusetts241
  3. Michigan239
  4. North Carolina230

States with a similar rate per 100,000

  1. Missouri2.2
  2. Vermont2.2
  3. Connecticut2.3
  4. New York2.3

The largest states

  1. California735
  2. Florida520
  3. New York449
  4. Texas449
  5. Pennsylvania383

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.