Spine Leaders

Steven C. Dennis, MD, is a board-certified orthopedic surgeon in Newport Beach, Calif.

Board-certified orthopedic surgeon Jon I. White, MD, is a general partner of Orthopaedic Specialty Institute of Orange County (Calif.). He also serves as an attending surgeon at St. Joseph's Hospital, Orange and Hoag Hospital and Hoag Orthopedic Institute, Irvine.

Ramin Raiszadeh, MD, is a board-certified orthopedic surgeon specializing in adult spine surgery. He serves as the director of clinical research.

Board-certified neurosurgeon Ben Zion Roitberg, MD, specializes in disc stenosis, myelopathy, radiculopathy, instability, lower back pain and spinal conditions.

Neurosurgeon Timothy Witham, MD, serves as director of the Baltimore-based Johns Hopkins Neurosurgery Spinal Fusion Laboratory, director of Johns Hopkins Bayview Medical Center's spine program and co-program director of the Johns Hopkins Neurosurgery Residency Program. He is also a neurological…

James Ronzo, DO, is a board-certified orthopedic spine surgeon in Tampa, Fla.

David Fusco, MD, is a neurosurgeon in Phoenix. He specializes in complex and simple cranial and spinal disorders.

Jason A. Brodkey, MD, is a board-certified neurological surgeon and a board-certified pain medicine specialist.

Frank L. Acosta, Jr., MD, serves as a neurosurgery associate professor at Keck Medicine of USC in Los Angeles. He treats adult spinal deformity and failed back syndrome as well as performs revision spinal reconstruction and minimally invasive spine surgery.

Phillip Lucas, MD, is a clinical associate professor at Brown Alpert Medical School in Providence, R.I. In 1981, Dr. Lucas oversaw the establishment of the school's spine surgery division.