Dr. Geller specializes in pediatric neurology for the Johns Hopkins All Children’s Institute for Brain Protection Sciences. He sees patients at the main campus in St. Petersburg and at Johns Hopkins All Children’s Outpatient Care, North Port. He joined the hospital staff in 2018. Dr. Geller previously was a pediatric neurologist and child neurology residency program director at Cardinal Glennon Children's Medical Center in St. Louis, Missouri. He retired as a captain from the U.S. Navy Medical Corps. His clinical and research interests include neurofibromatosis, neuro-oncology and pain management. Dr. Geller earned his medical degree from St. Louis University Medical School. He trained in pediatrics and served as chief resident at Naval Hospital in Oakland, California. He then completed a pediatric neurology residency and served as chief neurology resident at the University of Illinois in Chicago. He also completed a six-week externship at Queen Square Neurologic Institute in London, England. He is board certified in pediatrics and child neurology.