Dr. Tatum is a Fellow in the American Academy of Neurology, American Neurological Association and the American Clinical Neurophysiology Society. He is board-certified in neurology, clinical neurophysiology, and epilepsy and has served as the director for the Comprehensive Epilepsy Center and Epilepsy Monitoring Unit at Mayo Clinic Hospital in Jacksonville. He has authored more than 170 peer-reviewed manuscripts, 45 book chapters and edited or co-edited eight books in the field of epilepsy and clinical neurophysiology.