Daniel R. Simpson, MD

Daniel R. Simpson, MD, is a radiation oncologist who specializes in treating cancer of the liver, gastrointestinal tract and central nervous system (the brain and spinal cord). Dr. Simpson uses carefully targeted, high doses of radiation energy to destroy or damage cancer cells. He is experienced in intensity-modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT), stereotactic radiosurgery (SRS) and stereotactic body radiotherapy (SBRT).

Dr. Simpson also manages the care and treatment of cancer patients and works closely with other doctors, including medical and surgical oncologists, to provide comprehensive care.

As an assistant professor in the Department of Radiation Medicine and Applied Sciences at UC San Diego School of Medicine, Dr. Simpson instructs medical students and residents. His research interests include novel imaging techniques, immunotherapy, image-guided radiotherapy and adaptive radiotherapy.

He has co-authored many peer-reviewed articles, abstracts and book chapters, and his work has been published in journals such as the Journal of the National Cancer Institute, Oral Oncology, and International Journal of Radiation Oncology Biology Physics, among others. Dr. Simpson also serves as reviewer for numerous medical journals.

During his medical training, Dr. Simpson completed his internship in internal medicine at Huntington Memorial Hospital in Pasadena, California, and his radiation oncology residency at UC San Diego School of Medicine. He earned his medical degree from UC San Diego School of Medicine and obtained a master of advanced studies in clinical research from the School of Graduate Studies.

Outside of work, Dr. Simpson enjoys spending time outdoors in San Diego. He can often be found at dog beach with his son or playing golf in Coronado.

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