Diana Roth O’Brien, MD, MPH

I am a radiation oncologist who specializes in using cutting-edge radiotherapy techniques to treat a variety of cancers. These techniques include image-guided radiation therapy, intensity modulated radiation therapy, stereotactic radiosurgery, and stereotactic body radiotherapy. From early in my medical training, I was drawn to radiation oncology because of the deeply multidisciplinary nature of cancer care. MSK combines a collaborative environment, effective and innovative technology, and extensive resources that allow me to ensure that all of my patients receive optimal care.

Much of my research has focused upon identifying causes of, and reducing side effects associated with, radiotherapy. I am passionate about using my expertise and technology to ensure that my patients not only have their cancer effectively managed, but enjoy the best possible quality of life for years and decades following their treatment. During medical school, in addition to my medical degree, I pursued a Master of Public Health. This additional training has made me acutely aware of how many broad societal factors — beyond the scope of clinic visits — deeply influence the decisions that patients make. As a result, my research has also investigated the barriers that patients face in completing optimal, timely care, and methods to mitigate these obstacles.

For many patients, radiotherapy is a largely unknown and daunting process; as such, I prioritize listening and educating. Regardless of diagnosis, each patient brings unique perspective, values, concerns, and needs to a medical encounter. My aim is to explain complex treatment plans patiently and in an approachable way, such that my patients feel empowered to make informed, personalized decisions, and prepared to embark upon radiotherapy.

Outside of the office, I enjoy traveling, SCUBA diving, knitting, and spending time with my dogs.