James Kirkland Roberts, MD

Dr. Ronald A. Lehman, Jr. is a nationally recognized expert in the treatment of adult and pediatric spine conditions. He specializes in complex spinal deformities including scoliosis, kyphosis, revision spinal surgeries, and minimally invasive applications for deformity surgery, as well as cervical spine, cervical disc arthroplasty/replacement, myelopathy and radiculopathy. Dr. Lehman also focuses on Minimally Invasive Spine surgery (MIS) of the cervical and lumbar spine, and spinal tumors/cancer of the cervical, thoracic and lumbar spine. Dr. Lehman received his MD from Jefferson Medical College, and completed his residency at the Walter Reed Army Medical Center in Washington D.C. He then completed his fellowship training in adult and pediatric spine surgery at Washington University School of Medicine in St. Louis, Missouri. Prior to joining the faculty at Washington University, he served as a Lieutenant Colonel (LTC) in the Army, receiving three Meritorious Service Medals (MSMs), the “A” Proficiency Designator and the Order of Military Medical Merit. He was the Chief of the Adult and Pediatric Spine Service, and the Consultant to the White House.. Dr. Lehman is the recipient of several Department of Defense (DOD) research grants totaling more than $10 million. He currently serves as the Program Chairman of the Cervical Spine Research Society (CSRS), Scoliosis Research Society (SRS), and the Lumbar Spine Research Society (LSRS). Additionally, he will take over as Chairman of the International Meeting on Advanced Spine Techniques (IMAST) next year. Dr. Lehman has over 120 peer reviewed publications.

Dr. Alexander Neuwirth is an orthopedic surgeon specializing in advanced hip and knee reconstruction, with a focus on non-operative and surgical treatment of early, middle, and late-stage arthritic conditions of the hip and knee. For patients requiring surgical intervention, Dr. Neuwirth specializes in anterior approach hip replacement, knee replacements, as well as complex revision surgeries to treat failed hip and knee replacements. Dr. Neuwirth received his medical degree from Rutgers University-Robert Wood Johnson Medical School, where he also completed his undergraduate degree. Following medical school, Dr. Neuwirth trained as a resident in orthopedic surgery at the University of Pennsylvania, where he also spent a year as a postdoctoral research fellowship in the McKay Orthopaedic Research Laboratory. Dr. Neuwirth completed a fellowship in adult hip and knee reconstruction at Columbia University Irving Medical Center and currently serves as an Associate Professor of Orthopedic Surgery and Attending Physician for the Department of Orthopedic Surgery, within the Columbia University Vagelos College of Physicians and Surgeons. In addition to his clinical practice, Dr. Neuwirth is actively engaged in ongoing clinical outcomes research in the field of joint replacement and reconstruction. His primary research efforts are focused on the eradication of infection following hip and knee replacements.

Justin K. Greisberg, MD, is an orthopedic surgeon specializing in foot and ankle reconstruction and complex musculoskeletal trauma. Dr. Greisberg is Chief of Foot & Ankle Orthopedics, Chief of Orthopedic Trauma, at NewYork-Presbyterian-Lawrence Division, and Professor of Orthopedic Surgery, Columbia University. Dr. Greisberg is an expert on complex reconstructive surgeries, limb realignment, diabetic reconstruction, Achilles tendon injuries, stress fractures, and total ankle replacement. His practice leverages advanced minimally invasive arthroscopic techniques, combined with the latest medications, braces, and orthotics to ensure accelerated recovery times. Following medical school and residency training, Dr. Greisberg completed advanced fellowship training in both foot and ankle surgery and orthopedic trauma. As chief of the foot and ankle service at Columbia University Irving Medical Center, Dr. Greisberg's practice – based in Manhattan and Westchester County – is supported by the full resources of the NewYork-Presbyterian Hospital system, and he frequently receives emergency trauma cases from across the region. In addition to his clinical practice, Dr. Greisberg is also a highly respected scholar who is conducting several research trials on foot and ankle procedures and trauma surgery. He co-authored a textbook, Core Knowledge in Orthopedics: Foot and Ankle, and numerous peer-reviewed articles that have appeared in professional medical journals. Dr. Greisberg is actively involved in the education of medical students and orthopedic residents and is frequently invited to lecture on complex problems of the foot and ankle at major medical conferences.