Andrew Ringer, MD, is a neurosurgeon with the Mayfield Clinic, Director of Neurosurgery at the Good Samaritan Hospital and Chief of Neurosciences at TriHealth Hospital System in Cincinnati, Ohio. . Dr. Ringer is dedicated to treating patients with neurovascular disease and to finding new neurosurgical techniques for the treatment of aneurysms, arteriovenous malformations, carotid artery disease, and stroke.