Susan Laduzinsky, MD

Susan Laduzinsky, MD

Assistant Professor of Radiation Oncology
Medical Director of Radiation Oncology, Siteman Cancer Center at Memorial Hospital East


  • BA, Biological Science: University of Chicago, Chicago, IL (1978)
  • MS, Research in Department of Microbiology: University of Chicago, Chicago, IL (1979)
  • MD: University of Illinois, Chicago, IL (1983)
  • Internship: Washington University School of Medicine, St. Louis, MO (1984)
  • Residency: Washington University School of Medicine, St. Louis, MO (1987)


  • Teacher of the Year Award: Mallinckrodt Institute of Radiology, Washington University School of Medicine (1989)
  • Washington University Community Partner Award, The Wellness Community (2000)

Clinical Interests

  • Breast Cancer
  • Stereotactic radiation


Certified by the American Board of Radiology in Therapeutic Radiology (1987).


Susan Laduzinsky, MD, joined the Washington University Radiation Oncology faculty in 2018 as an assistant professor. She earned her medical degree from the University of Illinois in Chicago, IL, and completed both her internship and radiation oncology residency at Washington University School of Medicine. In Illinois, she has collaborated with James Clanahan, MD, and William Popovic, MD, to establish a Breast Center that has been accredited by the American College of Surgeons. This growing center sees over 100 patients per year.  Her research interests include placing patients on national protocols to advance the field of radiation oncology.

Dr. Laduzinsky is a Washington University Physicians in Illinois provider, and sees patients at Siteman Cancer Center’s Illinois location.


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