Meet Our Medical Staff Frank D. Vrionis, MD, MPH, PhD Institute Director Patricio Espinosa, MD, MPH Chief of Neurology Sajeel Chowdhary, MD Director Medical Neuro-Oncology Sameea Husain Wilson, DO Director Movement Disorder Neurology Pooja Patel, MD Neurology Thomas C. Hammond, MD, FAAN Neurology Jonathan Harris, MD Neurology Roy C. Katzin, MD Neurology Evan Packer, MD Neurosurgery Marc Swerdloff, MD Neurology Lloyd Zucker, MD Neurosurgery Joshua Chalkley, DO, MS Neurology Timothy Miller, MD, MS Neurosurgery Brian M. Snelling, MD Neurosurgery