Xenos Mason M.D. is a board-certified neurologist and movement disorders specialist, with training in the management of Parkinson disease, tremor, dystonia, chorea, ataxia, Tourette syndrome/tic disorders, and functional movement disorders. He has special interest and expertise in the use of Deep Brain Stimulation (DBS) in the treatment of movement disorders. His research in DBS surrounds the development of neuro-imaging and neurophysiological biomarkers: new tools to guide individualized therapy, reduce side effects, and improve outcomes for patients.

Dr. Mason completed his medical training at Harvard Medical School, Massachusetts General Hospital, Brigham and Women's Hospital, and UCLA. He undertook a research fellowship with the Howard Hughes Medical Institute under the mentorship of Dr. Li-Huei Tsai (Massachusetts Institute of Technology). There he studied the effects of chronic-stress on learning, memory, and Alzheimer's disease.

He joined the faculty in the departments of neurological surgery and neurology in 2021.