Meet our fellows

2021 – 2020

Geoffrey Colby, MD, PhD

Geoffrey Colby is a neurosurgeon and expert specialist in the open microsurgical and minimally-invasive endovascular treatment of cerebrovascular disorders of the brain and spine. He is the Director of Cerebrovascular Neurosurgery and an Associate Professor of Neurosurgery and Radiology at UCLA Health. Geoff uses the most modern and advanced techniques to treat cerebral aneurysms, arteriovenous malformations (AVMs), dural arteriovenous fistulas (dAVFs), subarachnoid hemorrhage (SAH), stroke, intracerebral hemorrhage (ICH), carotid stenosis, cavernous malformations, and Moyamoya. He is a world-class expert using flow diversion for treatment and cure of brain aneurysms. He also performs embolization of tumors of the brain and spine. Geoff’s research explores technical advances to improve patient outcomes and the development of novel devices and techniques to treat cerebrovascular disorders. He has co-authored more than 100 peer-reviewed scientific articles and book chapters, has served as the principal investigator for many clinical studies testing new endovascular devices to treat cerebral aneurysms and stroke, and has won numerous awards, including the Neurosurgery Chairman’s Award for Improving Patient Safety from Johns Hopkins University. He has lectured around the world on 4 continents and is a reviewer for the main journals in the field of cerebrovascular disorders. Dr. Colby completed residency in Neurosurgery and fellowship in Endovascular Neurointervention at Johns Hopkins University after receiving his MD from Columbia University. Dr. Colby received his BS in Biology from Columbia University where he graduated Phi Beta Kappa and Summa Cum laude.