Dr. Belzil is an Associate Professor of Neurology at Vanderbilt University Medical Center where she also serves as the Director of the Vanderbilt ALS Research Center. She obtained her bachelor's degree in psychology from McGill University in 2003 and her master's degree in psychology from Walden University in 2007. Continuing her academic journey, she pursued her Ph.D. in Neuroscience at the University of Montreal under the mentorship of Dr. Guy A. Rouleau, a renowned figure in human medical genetics and amyotrophic lateral sclerosis (ALS) research, graduating in 2012.

Following the completion of her doctoral studies, Dr. Belzil embarked on a postdoctoral research fellowship at the Mayo Clinic in Florida, under the guidance of Dr. Leonard Petrucelli, a leading expert in neurodegeneration. During this time, she initiated and spearheaded a translational research program aimed at developing patient-centered approaches for treating ALS and Alzheimer's disease-related dementias (ADRDs), notably frontotemporal dementia (FTD).

Dr. Katharine Sourbeer is an Assistant Professor in the Department of Neurology’s Movement Disorders Division at Vanderbilt University Medical Center. She manages patients facing a wide variety of movement disorders including Parkinson’s disease, Huntington’s disease, Dystonia, Essential tremor, and Tourette Syndrome. She holds certification in Neurology from the American Board of Psychiatry and Neurology and is a member of the Movement Disorders Society and the American Academy of Neurology. 

Dr. Sourbeer completed a fellowship in Movement Disorders at VUMC. She also completed Neurology residency at VUMC, during which time she participated in the Distinction in Biomedical Ethics Program and Distinction in Leadership Training. She served as chief resident her final year and earned the department’s James True Martin Award and Medical Student Teaching Award. She earned her M.D. from the Virginia Tech Carilion (VTC) School of Medicine in Roanoke, VA, as well as a Graduate Certificate in Research in Translational Medicine from Virginia Polytechnic Institute in Blacksburg, VA. She earned her B.S. from Duke University in Durham, NC.

Dr. Stephen Layfield is an Assistant Professor in the Department of Neurology’s Neuromuscular Division at Vanderbilt University Medical Center. He is certified in Neurology by the American Board of Psychiatry and Neurology. Dr. Layfield is a member of the American Academy of Neurology and the American Association of Neuromuscular & Electrodiagnostic Medicine.

Dr. Layfield completed a Clinical Neurophysiology Fellowship at the Mount Sinai Hospital in New York City. He completed neurology residency training at the University Hospitals at Cleveland Medical Center. He earned his B.S. as well as his Doctor of Medicine from the University of Alabama at Birmingham.

In his free time, he enjoys board games, hiking, and cooking.

Dr. Olivia Gruder is an Assistant Professor of Neurology at Vanderbilt University Medical Center. She specializes in Neuroimmunology and General Neurology. Dr. Gruder earned her both her BS in biological science as well as her MD from The Florida State University. She then completed her internal medicine internship and neurology residency at Thomas Jefferson University Hospital in Philadelphia, PA. After residency, she completed a clinical fellowship in Neurology – Neuroimmunology / Multiple Sclerosis at Yale New Haven Health. Currently, she provides care at various locations at Vanderbilt, including The Vanderbilt Clinic, Vanderbilt Neurology Lebanon and Green Hills Multiple Sclerosis Center. In addition to performing inpatient consults with medical students and residents at VUMC, she also provides inpatient care via telemedicine to multiple regions within Tennessee and Kentucky.