He got his medical degree at The Ohio State University, and then went on to complete his internship and residency at The Ohio State University Wexner Medical Center and completed his fellowship training at the OSU Spinal Cord Injury Research Center. Dr. Mullin is board certified by the American Board of Neurological Surgery, and his special interests include the treatment of aneurysms, brain tumors, head trauma and strokes, among many other issues surrounding brain and spinal cord ailments.