Konstantinos Margetis, MD, PhD is a dual-fellowship trained neurosurgeon with clinical expertise in the surgical treatment of conditions that cause back and neck pain. He collaborates with pain management and orthopedics to operate on highly complex spine cases and spine revision surgeries (including endoscopic lumbar fusions). He serves as Director of Complex Spine Surgery for Neurosurgery at The Mount Sinai Hospital and Director of Spine at Mount Sinai-Union Square.