Advocate Radiation Oncology


  • Bachelors Degree – Cornell University
  • Medical School – University of Florida College of Medicine
  • 1st Residency – Emory University Hospital – Radiation Oncology

Board Certifications

  • Radiation Oncology

Areas of Expertise

  • IMRT
  • Brachytherapy
  • Stereotactic Radiosurgery (SRS)
  • Stereotactic Body Radiotherapy (SBRT)

Mary Koshy, M.D.

Dr. Mary Koshy is a firm believer in approaching medicine as both a science and an art and believes that healing is rooted in compassion, empathy, and forming a human connection with each of her patients. Drawn to the evolving field of radiation oncology, Dr. Koshy has a passion for understanding and delivering cutting-edge precision treatments that are curative and able to preserve the quality of life of cancer patients.

Dr. Koshy graduated Summa Cum Laude from Cornell University before attending the College of Medicine at the University of Florida. After earning her medical degree, Dr. Koshy completed her internship and residency at Emory University, where she graduated as Chief Resident. For two years, Dr. Koshy served as an academic professor at Emory University and Baylor College of Medicine before moving into private practice in Florida in 2007. With over 18 years of radiation oncology experience, Dr. Koshy’s areas of expertise include IMRT , brachytherapy , Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiotherapy (SBRT).

Named every year as a ‘Top Doctor’ since 2011, Dr. Koshy has been honored to receive numerous awards including the Stephen Goldman Keystone Award, recognizing her significant efforts to fight against cancer. Dr. Koshy has authored and published numerous articles focusing on IMRT and PET imaging. She is an active member of several professional organizations, including the American Society for Therapeutic Radiology and Oncology, the American Society of Clinical Oncology, the American Association of Women in Radiology and the American College of Radiology.

In her life outside of medicine, Dr. Koshy enjoys spending quality time with her husband and three children in her hometown of Sarasota. With deep roots in Florida, Dr. Koshy appreciates the expanded knowledge and insights found in traveling the world.