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Radiation Oncology in Chicago, Illinois

Data updated monthly · Last refresh September 2026

87 Radiation Oncology providers practice in Chicago, and 46% received drug or device company payments in 2025. Listings are drawn from federal public records and are not endorsements.

Radiation Oncology providers in Chicago

Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Mohamed Abazeed, MD, PHD
Chicago, IL · $69 in drug and device payments (2025) · Telehealth · (312) 926-5392
Dr. Montserrat Quintana, MD
Chicago, IL · $7 in drug and device payments (2025) · (773) 702-0817
Dr. Muzamil Arshad, MD/PHD
Chicago, IL · No drug or device payments recorded (2025) · (773) 795-0528
Dr. Nam Kim, MD
Chicago, IL · No drug or device payments recorded (2025) · (773) 506-0900
Dr. Nathaniel Camden, MD
Chicago, IL · No drug or device payments recorded (2025) · Telehealth · (312) 942-5751
Dr. Neilayan Sen, M.D.
Chicago, IL · $19 in drug and device payments (2025) · (312) 942-5000
Dr. Neil Mehta, M.D.
Chicago, IL · $258 in drug and device payments (2025) · Telehealth · (312) 595-1444
Dr. Nikhil Joshi, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (312) 942-5751
Dr. Omar Azem, MD
Chicago, IL · $269 in drug and device payments (2025) · (312) 942-5751
Dr. Paul Schabinger, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (773) 792-5133
Dr. Philip Blumenfeld, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (773) 899-0473
Dr. Philip Connell
Chicago, IL · No drug or device payments recorded (2025) · Telehealth · (888) 824-0200
Dr. Preston Thomas, MD
Chicago, IL · No drug or device payments recorded (2025) · (312) 227-4000
Dr. Ralph Weichselbaum, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (773) 702-0817
Dr. Renuka Malik
Chicago, IL · $18 in drug and device payments (2025) · Telehealth · (888) 824-0200
Dr. Rohan Katipally, MD
Chicago, IL · No drug or device payments recorded (2025) · Telehealth · (773) 702-0817
Dr. Ross Abrams, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (312) 942-0712
Dr. Ross Zeitlin
Chicago, IL · No drug or device payments recorded (2025) · (312) 864-3838
Dr. Ruchika Gutt, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (773) 702-6870
Dr. Ryan Rhome, MD, PHD
Chicago, IL · $155 in drug and device payments (2025) · (843) 412-9919
Dr. Ryan Zitter, MD, MSC
Chicago, IL · $45 in drug and device payments (2025) · (773) 702-0817
Dr. Sean Pitroda, M.D.
Chicago, IL · No drug or device payments recorded (2025) · Telehealth · (773) 702-6870
Dr. Sean Sachdev
Chicago, IL · $2,100 in drug and device payments (2025) · Telehealth · (312) 926-2520
Dr. Sobiya Ansari, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (312) 942-7774
Dr. Sonali Rudra, M.D.
Chicago, IL · $80 in drug and device payments (2025) · Telehealth · (773) 702-1000
Dr. Sophia Kim-wang, MD, PHD
Chicago, IL · $45 in drug and device payments (2025) · (773) 702-0817
Dr. Soumyajit Roy, MBBS
Chicago, IL · $65 in drug and device payments (2025) · Telehealth · (312) 942-0712
Dr. Stanley Hoover, M.D.
Chicago, IL · No drug or device payments recorded (2025) · (312) 926-2520
Dr. Stanley Liauw
Chicago, IL · $27 in drug and device payments (2025) · Telehealth · (888) 824-0200
Dr. Suisui Song
Chicago, IL · $269 in drug and device payments (2025) · (888) 824-0200
Dr. Tarita Thomas, MD, PHD
Chicago, IL · $208 in drug and device payments (2025) · Telehealth · (312) 926-2520
Dr. Thomas Kim, M.D.
Chicago, IL · $911 in drug and device payments (2025) · Telehealth · (312) 942-5751
Dr. Timothy Sita, MD, PHD
Chicago, IL · No drug or device payments recorded (2025) · Telehealth · (312) 926-2520
Dr. Virginia Scharf
Chicago, IL · $68 in drug and device payments (2025) · (312) 563-2531
Dr. William Dieter
Chicago, IL · $31 in drug and device payments (2025) · (312) 942-0712
Dr. William Small, M.D.
Chicago, IL · $10,230 in drug and device payments (2025) · Telehealth · (312) 926-2520
Dr. Yasmin Hasan
Chicago, IL · $8,789 in drug and device payments (2025) · Telehealth · (888) 824-0200

Common questions

How many Radiation Oncology providers are in Chicago, Illinois?

There are 87 Radiation Oncology providers with active NPI records practicing in Chicago, according to federal NPPES data refreshed monthly.

How many Radiation Oncology providers in Chicago received drug or device company payments?

40 of 87 (46%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

Where does this data come from?

Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

All specialties in Chicago Radiation Oncology across Illinois

Try a city like Tucson, a zip like 85016, or a specialty like psychiatry. For a doctor by name, use the full search.
Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.