Ellen Bellairs

Dr. Ellen Bellairs earned her Master of Science degree from the University of Florida and her Doctor of Medicine from the Baylor College of Medicine in Houston, TX. She then completed an internship in Internal medicine and residency at the University of Minnesota's Department of Radiation Oncology, where she also served as Chief Resident during her last two years in residency.

With over 30 years of experience in radiation oncology, Dr. Bellairs joined GenesisCare in 2025. Prior to this, she spent more than 20 years with Minnesota Oncology, where she made significant contributions to the field. Dr. Bellairs pioneered the CyberKnife program at Saint Joseph's Hospital, developed and led a Trilogy-based IGRT and Stereotactic Radiosurgery program, and established a High-dose rate (HDR) brachytherapy program and a radioimmunotherapy program, at a freestanding center. Additionally, she served as Co-Medical Director of the Nassiff CyberKnife Center, where she launched a new CyberKnife radiosurgery program focused on adult intracranial and extracranial lesions, treating over 200 patients in its first year. Dr. Bellairs also held the role of Vice President of Radiation Oncology where she promoted excellence, collaboration, and a unified vision across specialties.

Before earning her Doctor in Medicine, Dr. Bellairs is experienced as a Clinical Dietician at the Hospital of the University of Pennsylvania, The Lankenau Hospital and St. Francis Xavior Hospital. She also spent four years with Wyeth Ayerst Pharmaceuticals, where she held roles of Clinical Research Associate and Regional Clinical Associate.

Dr. Bellairs specializes in the treatment of a wide range of cancers, with particular expertise in breast, gynecologic, gastrointestinal, lung, genitourinary, and central nervous system (CNS) cancers. In addition, she has a special interest in utilizing radiation therapy treatments for managing chronic pain associated with conditions such as Dupuytren’s contracture, osteoarthritis, and plantar fasciitis. Dr. Bellairs is committed to delivering exceptional care, creating personalized treatment plans, and working closely with her patients' care teams to ensure the best possible outcomes.