See all

Parag J. Parikh, MD, BSE

Associate Professor of Radiation Oncology


Mailing Address660 South Euclid Ave, Campus Box 8224, St. Louis, MO 63110

Executive Assistant:
Jennifer German (

Additional Titles

  • Associate Professor of Biomedical Engineering
  • Chief, Gastrointestinal Service

Related Links


  • BSE, Biomedical Engineering (Computer Imaging): Case Western Reserve University, Cleveland, OH (1997)
  • MD: Washington University School of Medicine, St. Louis, MO (2001)
  • Internship, Internal Medicine: Washington University School of Medicine, St. Louis, MO (2002)
  • Residency, Radiation Oncology: Washington University School of Medicine, St. Louis, MO (2006)

Board Certifications

  • Certified by the American Board of Radiology in Radiation Oncology (2007, recertified 2016)


  • South County Businessperson of the Year Award (for work with Siteman Cancer Center – South County): South County Chamber of Commerce, St. Louis, MO (2014)
  • Medical Director of Siteman Cancer Center – South County: Washington University School of Medicine/Siteman Cancer Center (2011-2014)
  • Chair, Department of Radiation Oncology Research Committee: Washington University School of Medicine (2012-2014)

Clinical Interests

Pancreatic Cancer
Hepatobiliary Pancreatic Cancer
Gastrointestinal Oncology
Genitourinary Oncology
Thoracic Oncology


Parag J. Parikh, MD, is an associate professor of radiation oncology and biomedical engineering, where he is chief of service for gastrointestinal cancers and also treats cancers of the lung. He earned a medical degree and completed residency training in radiation oncology at Washington University School of Medicine and has been a member of the faculty since 2006. Dr. Parikh’s clinical interest is gastrointestinal oncology, hepatobiliary pancreatic cancer, pancreatic cancer, genitourinary and thoracic oncology. His research interests include real-time and electromagnetic tracking for lung tumors, organ motion research, 4D radiation therapy and other technological developments in radiation oncology.


Dr. Parikh studies how tumor motion affects radiation therapy delivery. It had been well known that tumors in the lung and abdomen move with respiration, but in the 2000s, there were few ways to measure and account for this motion. Dr. Parikh worked on the earliest methods to use oversampled CT to measure respiratory motion. Dr. Parikh then created a robotic motion phantom used by several institutions to better evaluate technologies developed for respiratory motion management in radiation therapy. He was the Primary Investigator on the R01 incorporating real-time localization in radiation therapy planning and delivery. This grant incorporated the use of electromagnetic transponders into lung cancer radiation therapy planning and delivery. It was an academic/industrial partnership with Philips Medical. He is a Co-investigator on the R01 studying Lung Trajectory Mapping for IMRT, and Co-investigator, R21, Four-dimensional MRI for Image-Guided Radiation Therapy for Pancreatic Cancer.


View full list
(Disclaimer: This listing may not include all articles associated with this faculty member and may include publications related to others with a similar name.)