Dr. William O. Tatum IV is professor in the Mayo Clinic College of Medicine, and senior consultant in the Department of Neurology at Mayo Clinic Florida. He 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 serves as the current director for the Comprehensive Epilepsy Center and Epilepsy Monitoring Unit at the Mayo Clinic in Florida.

He completed his medical education at the College of Osteopathic Medicine and Surgery in Des Moines, Iowa, neurology residency at Loyola University Medical Center in Chicago, Illinois, and a two-year epilepsy fellowship at Graduate Hospital affiliated with the University of Pennsylvania. After training, he relocated to Tampa, Florida pioneering Tampa General Hospital-University of South Florida Comprehensive Epilepsy Center before joining the Mayo Clinic in 2009 as a clinician-educator.

He is a past president of the board of the American Board of Clinical Neurophysiology and the American Clinical Neurophysiology Society, currently serving as the Chair for the clinical neurophysiology section of the American Academy of Neurology. He has served on the board of directors for the American Board of Registration of EEG Technologists and Evoked Potentials, and currently serves on the board of the Epilepsy Foundation of America. He has been principal investigator in pharmacologic and device clinical trials with research interests in drug-resistant epilepsy, seizure semiology and EEG/clinical neurophysiology.

He has authored 160 peer-reviewed manuscripts, 35 book chapters and edited/co-edited 8 books in the field of epilepsy and clinical neurophysiology. He serves on the current editorial board for the Journal of Clinical Neurophysiology as Associate Editor, and is the Editor-in-Chief for Epilepsy and Behavior Reports. He has presented lectures at national and international meetings as an invited lecturer.