Dr. Steven Seyedin is a UCI Health radiation oncologist who specializes in treating gastrointestinal and genitourinary cancers.

Steven N. Seyedin, MD


Radiation Oncology

Clinical Interests

anal cancer, bladder cancer, colorectal cancer, esophageal cancer, gastric (stomach) cancer, kidney cancer, liver cancer, metastatic cancer, pancreatic cancer, prostate cancer, rectal cancer, stereotactic body radiation therapy (SBRT)

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Medical Services
  • Board eligible
  • English
  • Farsi
Medical School
David Geffen School of Medicine at UCLA
University of Illinois College of MedicineInternal Medicine
University of Iowa Hospital and ClinicsRadiation Oncology
Professional Positions
  • Assistant Professor — Department of Radiation Oncology, UCI School of Medicine
Awards and Recognition
  • Excellence in Clinical Teaching Award — University of Iowa Hospital and Clinics, 2020
  • Resident Recognition Award in Biology — ASTRO Annual Meeting, 2020
  • Abstract Travel Award — ASTRO Annual Meeting, 2019
  • Prostate Scholarship Workshop — American Brachytherapy Society, 2019
  • Roentgen Residency Research Award — Radiation Society of North America, 2018, 2019
More Information

Dr. Steven Seyedin is a UCI Health radiation oncologist. His research interests involve the application of radiation for gastrointestinal and genitourinary cancers.

Seyedin earned his medical degree from the David Geffen School of Medicine at UCLA. After graduating, he completed a research fellowship in radiation oncology at the MD Anderson Cancer Center in Houston, Texas. He then completed his residency training at the University of Iowa Hospital and Clinics in Iowa City. 

His work has been published in prestigious journals, including JAMA OncologyFrontiers in Oncology, Radiation Research and the International Journal of Radiation Oncology, Biology, Physics.

Seyedin sees patients at the UCI Health Chao Family Comprehensive Cancer Center.

UCI Health Chao Family Comprehensive Cancer Center
101 The City Drive South, Building 23
Orange, CA 92868
Phone: 714-456-8000
Fax: 855-211-3729