Dr. Timmons serves as Director of Neurotrauma, Vice Chair for the Administration Department of Neurosurgery, and Professor of Neurosurgery at Penn State Health Milton S. Hershey Medical Center. She has been a clinical researcher for a number of years, and has participated as principal investigator in numerous clinical trials related to traumatic brain injury. She has published and lectured on a variety of topics related to traumatic brain injury, neurocritical care, spinal cord injury, blunt vascular injury, and health care delivery throughout her career. She has held a variety of professional organizational positions, including Director-at-Large for the American Association of Neurological Surgeons (AANS) Board of Directors, Chair of the Section on Neurotrauma and Neurocritical Care of the AANS and Congress of Neurological Surgeons (CNS), Governor and Chair of the Neurosurgery Advisory Council of the American College of Surgeons, and Scientific Counsellor for the Centers for Disease Control Center for Injury Control and Prevention.