Michael R. Murray, MD, is a board-certified orthopedic spine surgeon at Philadelphia-based University of Pennsylvania Perelman School of Medicine.

Tyler A. Koski, MD, is a board-certified neurosurgeon and co-director of Chicago-based Northwestern Medicine Spine Center.

Marc P. Oliveri, DO, is a board-certified orthopedic spine surgeon at Lancaster (Pa.) Orthopedic Group.

Thomas T. Haider, MD, is a board-certified orthopedic spine surgeon and the founder of Riverside, Calif.-based Haider Spine Center.

Faheem A. Sandhu, MD, PhD, is a board-certified neurosurgeon and the spine surgery director at MedStar Georgetown University Hospital in Washington, D.C.

Chris A. Cornett, MD, is a board-certified orthopedic spine surgeon and associate adult spine surgery professor at University of Nebraska Medical Center in Omaha.

Terrence L. Piper, MD, is a board-certified orthopedic spine surgeon and the president and founder of St. Peters, Mo.-based Piper Spine Care.

Martin H. Krag, MD, is a board-certified orthopedic spine surgeon at the University of Vermont Medical Center in South Burlington.

Terrence Crowder, MD, is a board-certified orthopedic spine surgeon at Phoenix-based Sonoran Spine.

Josiah Orina, MD, is a neurosurgeon at Portland-based Oregon Health & Science University.

Nicholas Theodore, MD, is a board-certified neurosurgeon and the director of the Baltimore-based Johns Hopkins Neurosurgical Spine Center.

Robert L. Remondino, MD, is a board-certified neurosurgeon at Oklahoma City-based Neuroscience Specialists.

Gordon Tang, MD, is a board-certified neurosurgeon at Berkeley, Calif.-based East Bay Neurosurgery & Spine.

Howard B. Yeon, MD, is a board-certified orthopedic spine surgeon at Philadelphia-based Rothman Orthopaedic Institute's new Montvale, N.J. location.

William Bacon, MD, is a board-certified orthopedic spine surgeon at Provo, Utah-based Revere Health.

Peter C. Gerszten, MD, is a board-certified neurosurgeon at UPMC.

Michael Chang, MD, is a board-certified orthopedic spine surgeon at Sonoran Spine in Tempe, Ariz.

Jason L. Pittman, MD, PhD, is a board-certified orthopedic spine surgeon and an assistant orthopedic surgery professor at  the University of Alabama at Birmingham School of Medicine. 

Mauricio A. Valdes, MD, is a board-certified orthopedic spine surgeon at Phoenix-based Hedley Orthopedic Institute.

Jae Y. Lim, MD, is a board-certified neurosurgeon at Vienna, Va.-based Atlantic Brain and Spine.