Daniel S. O'Connor, MD

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. Cara Swintelski is a board-certified radiology specializing in breast imaging. She is an assistant professor of radiology at Columbia University Irving Medical Center. Dr. Swintelski is experienced in all aspects of breast imaging, including mammography, tomosynthesis, breast ultrasound, breast MRI, and all modes of breast biopsies. After completing her radiology residency training at the Icahn School of Medicine at Mount Sinai West, Dr. Swintelski subsequently completed a Breast Imaging and Intervention Fellowship at Columbia University Irving Medical Center/NewYork-Presbyterian Hospital. She is a member of the Radiological Society of North America and the Society of Breast Imaging.

Dr. Virendra I. Patel is the chief of vascular surgery at NewYork-Presbyterian/Columbia University Irving Medical Center. A vascular surgeon-scientist, Dr. Patel is highly skilled in the full range of vascular disorders that can lead to stroke, renal issues, intestinal problems, and peripheral arterial disease. Dr. Patel has a particular interest in clinical outcomes research and has served as principal investigator of several studies to evaluate open and minimally invasive repairs of complex aortic aneurysms. He participated in the TEVAR and EVAR Committees of the Vascular Quality Initiative of the Society of Vascular Surgery, and hel has also been a member of the Executive Council of the New England Society of Vascular Surgery and the Research Advisory Committee for the Society’s Vascular Study Group. A graduate of Tufts University School of Medicine, Dr. Patel completed his surgical residency and a research fellowship in vascular surgery at Beth Israel Deaconess Medical Center and was a clinical fellow in vascular and endovascular surgery at Massachusetts General Hospital. He earned a Master of Public Health at the Harvard T.H. Chan School of Public Health’s Program of Clinical Effectiveness.