Timothy J. O'Brien, PhD

Dr. Crystal J. Jicha is a board-certified UCI Health neurologist who specializes in headaches and facial pain disorders, including migraines, cluster headaches, occipital neuralgia, trigeminal neuralgia, low- and high-pressure headaches. She is skilled in treatment procedures that include nerve blocks, trigger point injections, sphenopalatine ganglion blocks and Botox. Jicha earned her medical degree at the University of Kentucky College of Medicine in Lexington. She completed a residency in neurology at Albert Einstein College of Medicine/Montefiore Medical Center in New York City, where she served as chief resident. She then completed fellowship training in headache and facial pain at Montefiore Medical Center. Her research and professional interests include women's health, patient advocacy and healthcare for underserved populations.

Dr. Wengui Yu is a boarded-certified neurologist, neurointensivist and vascular neurologist who sees patients at the UCI Health Comprehensive Stroke & Cerebrovascular Center in Orange. He specializes in treating severe strokes and complex cerebrovascular disorders. Yu earned his medical degree at Jiangxi Medical College in China, followed by a PhD in experimental medicine from McGill University in Montreal, Canada. He also completed a residency in neurology at University of Missouri and a fellowship in neurocritical care and stroke at the University of California, San Francisco. Yu directed neurocritical care programs at University of Texas Southwestern Medical Center in Dallas and at Cedars-Sinai Medical Center in Los Angeles before joining UC Irvine Medical Center and the UC Irvine School of Medicine. Yu's research interests include outcomes for severe stroke and traumatic brain injury, intra-cranial atherosclerotic stenosis, cervical arterial dissection, cerebral venous anomaly and inflammation of the central nervous system. He is the author or co-author of numerous peer-reviewed publications. His goal is to make the Comprehensive Stroke and Cerebrovascular Center one of the best in the nation.