Michael A. Williams, MD, FAAN

Principal Investigator


University of Washington Medical Center
Professor of Neurology and Neurological Surgery
President of the International Society for Hydrocephalus and Cerebrospinal Fluid Disorders
Medical Advisory Board Member, Hydrocephalus Association
Board of Directors, Hydrocephalus Association


Dr. Williams is director of Adult and Transitional Hydrocephalus and CSF Disorders at University of Washington. He is an expert in idiopathic normal pressure hydrocephalus (iNPH), hydrocephalus in young and middle-aged adults, hydrocephalus in young adults making the transition from pediatric specialists to adult specialists, and idiopathic intracranial hypertension.

Dr. Williams has been an expert in the field of hydrocephalus and CSF disorders for over 30 years. He first developed his expertise in the management of acute hydrocephalus in patients in the NeuroICU, and then began to use the same diagnostic and treatment methods for patients with chronic forms of hydrocephalus. He established adult hydrocephalus centers at Johns Hopkins Hospital and at Sinai Hospital of Baltimore before moving to the University of Washington in 2016.

Dr. Williams is board certified in adult neurology, and is a member of the American Academy of Neurology and the American Neurological Association. He helped create the International Society for Hydrocephalus and CSF Disorders and is a past president of the society. He was co-chair of the first NIH workshop on hydrocephalus in 2005. He is a founding member of the Adult Hydrocephalus Clinical Research Network. He is also the lead investigator for a study on Comparison of Continuous Non-invasive and Invasive Intracranial Pressure Measurement with the National Space Biomedical Research Institute. He has long been active in patient advocacy with the Hydrocephalus Association, and is currently a member of its Board of Directors and Chair of its Medical Advisory Board. Dr. Williams has published over 35 peer-reviewed research papers on hydrocephalus issues.