Born and raised in Southern California, Dr. Simpson graduated from UCSD in 2001 with a B.S. in Neuroscience. He received his M.D. and Master’s degree in Clinical Research from the UCSD School of Medicine in 2010. He completed his residency training in Radiation Oncology at UCSD.

Dr. Simpson specializes in malignancies of the liver, gastrointestinal tract, and central nervous system (brain and spinal cord). He is experienced in intensity-modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT), stereotactic radiosurgery (SRS) and stereotactic body radiotherapy (SBRT).

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.

Outside of work, Dr. Simpson enjoys spending time with his family outdoors in San Diego. His wife, Miriam, is an instructor of physics at Cuyamaca College.