Dr. Mark A. Peterson

Dr. Joseph O’Brien is a specialist in minimally invasive spine surgery. He spent 9 years at GWU as an associate professor of Orthopaedic Surgery and Neurological Surgery. Additionally, he was formerly the Medical Director of Minimally Invasive Spine Surgery at The GW Hospital. He is a fellow in the Academy of Orthopaedic Surgery. He completed his spine surgical training at the Johns Hopkins University Medical Center. Dr. O’Brien actively pursues research in ways to improve spine surgery and techniques to salvage failed spine surgery. He has been published in a variety of medical journals including Spine, the Journal of Neurosurgery Spine, Neurosurgery, Journal of the American Academy of Orthopaedic Surgery, and Current Orthopaedic Practice. His research has been presented around the globe with between 10-20 research presentations on a national level per year. He offers expertise in minimally invasive surgery and revision of failed spine surgery. In particular, he has an interest in failed cervical spine surgery. Dr. O'brien is rated as a Distinguished provider by MediFind in the treatment of Spondylolisthesis. His top areas of expertise are Spondylolisthesis, Scoliosis, Spinal Stenosis, Microdiscectomy, and Herniated Disc Surgery.

Dr. Khaled Kebaish serves as chief of the Spine Division in the Department of Orthopaedic Surgery. He is a professor of orthopaedic surgery and neurological surgery at the Johns Hopkins University School of Medicine. His areas of clinical expertise include spine deformities and scoliosis, degenerative spine disorders, spine tumors and disc arthroplasty. Dr. Kebaish earned his M.D. from Cairo University. He completed his residency at University of Toronto in Toronto, Canada, and performed a fellowship in spinal reconstructive surgery at Johns Hopkins. Dr. Kebaish's research interests include the clinical and functional outcomes of spine surgery with a special focus on adult deformity surgery. He also focuses on the biomechanical testing and evaluation of different fixation devices and techniques in the adult spine. Dr. Kebaish is rated as an Elite provider by MediFind in the treatment of Spondylolisthesis. His top areas of expertise are Kyphosis, Lordosis, Scoliosis, Osteotomy, and Spinal Fusion.

Brett Quigley is an Orthopedics provider in Germantown, Maryland. Dr. Quigley is rated as a Distinguished provider by MediFind in the treatment of Spondylolisthesis. His top areas of expertise are Spondylolisthesis, Sciatica, Scoliosis, Spinal Stenosis, and Laminectomy. Dr. Quigley is currently accepting new patients.