Karen L. Bell, MD

Dr. Neil Shneider is a physician-scientist with expertise in neuromuscular development and disease. He is a graduate of Harvard College and of the MD-PhD program of the Columbia University College of Physicians and Surgeons, and he was Chief Resident of the Harvard Longwood Neurology Training Program. Dr. Shneider completed his graduate work in the laboratory of Dr. Richard Axel and his postdoctoral fellowship in the laboratory of Dr. Thomas Jessell. After several years in the Intramural Program of the National Institute of Neurological Disorders and Stroke, Dr. Shneider returned to Columbia University as Assistant Professor of Neurology in the Neuromuscular Division. He is a member of the Center for Motor Neuron Biology and Disease and of the H. Houston Merritt Clinical Research Center. Dr. Shneider has clinical expertise in the diagnosis and care of patients with ALS and related motor neuron diseases.

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.

Dr. Samantha Erosa is an Assistant Professor of Rehabilitation and Regenerative Medicine at Columbia University Medical Center. She is dual board-certified in Pain Medicine and Physical Medicine & Rehabilitation. She specializes in interventional approaches to treat pain related to the spine and musculoskeletal conditions. Dr. Erosa earned her undergraduate degree in Biology from the University of Pennsylvania. She received her medical degree from New York Medical College and was inducted into the Gold Humanism Honor Society. She then completed an Internal Medicine internship at Mount Sinai Beth Israel and residency in Physical Medicine and Rehabilitation at NewYork-Presbyterian, Columbia and Cornell, where she served as Chief Resident. She subsequently completed a fellowship in Interventional Pain Medicine at the University of California, San Diego where she acquired the skills to diagnose and treat a variety of pain conditions utilizing minimally invasive spine techniques, neuromodulation, and regenerative medicine procedures using fluoroscopic and ultrasound-guidance.Dr. Erosa’s path to medicine began with a strong interest in the musculoskeletal system- fostered by her long history of competitive sports at both the collegiate and international levels. She understands the importance of a multidisciplinary approach to any neuromusculoskeletal or spine-related problem including physical therapy, occupational therapy, exercise, nutrition, lifestyle modifications, and targeted interventional procedures. Her fellowship training affords her the expertise to provide non-operative spine care, minimally-invasive pain management, and regenerative options to treat a variety of pain conditions. Above all, she believes in the importance of communication with patients: ensuring they understand where their symptoms are coming from and the spectrum of treatment options available to address their specific needs and goals.Dr. Erosa was born and raised in the Bronx, New York. She enjoys camping, visiting the national parks, and open fire cooking.