Dr. Alexander L. Coon received his medical degree from Columbia University's College of Physicians Surgeons in New York where he graduated with AOA Honors. He completed a general surgery internship at the Johns Hopkins Hospital. He then completed a neurosurgery residency at the Johns Hopkins University/Johns Hopkins Hospital. During this time he completed a dedicated 2-year fellowship in interventional neuroradiology making him one of the few neurosurgeons in the country with this dual training.

Now an Assistant Professor of Neurosurgery, Radiology, and Neurology, Dr. Coon serves as the Director of Endovascular Neurosurgery for the Johns Hopkins Hospital. His practice focuses on the surgical and endovascular treatment of aneurysms, arteriovenous malformations (AVMs), cavernous malformations, and dural arteriovenous fistulas (dAVFs) of the brain and spinal cord. Dr. Coon utilizes the latest surgical and endovascular techniques to treat patients with carotid artery stenosis, acute stroke, intracerberal hemorrhage (ICH), subarachnoid hemorrhage (SAH), and moyamoya disease. He also focuses on the specialized treatment of meningiomas, spinal disorders, neurological trauma, and hydrocephalus.

Dr. Coon has special expertise in the use of the new Pipeline Embolization Device for cerebral aneurysms. He uses this recently FDA-approved stent to treat aneurysms that previously could not be treated by conventional means.

Additionally, Dr. Coon possesses expertise in the pre-operative embolization of tumors of the brain and spine. He works closely with members of the division of neurosurgical oncology and spine to decrease blood flow to solid tumors before surgical resection.

Dr. Coon's research interests are in the development of endovascular devices and the techniques and outcomes associated with their usage for cerebrovascular pathology. He has published extensively in the field of stroke and subarachnoid hemorrhage (SAH).

Dr. Coon has received numerous honors and awards including recognition from the American College of Surgeons for Clinical Teaching, as well as, the Johns Hopkins Neurosurgery Chairman's Award for Excellence in Teaching.

A dedicated husband and father, Dr. Coon pursues an active lifestyle competing in numerous triathlons and marathons. He is also an avid mountaineer who has climbed Denali and Mt. Rainier.

Dr. Coon currently sees patients at the Johns Hopkins Hospital Outpatient Center (JHOC) on Mondays or by alternate appointment in his office.