Patricia J. Rivera Toolan, MD

Dr. Sean Drazner is a board certified emergency medicine physician with over 15 years of clinical experience in the management of critically ill and injured patients. His primary focus is taking care of those patients in his community. Dr. Drazner is a graduate of DesMoines University Osteopathic Medical Center. He completed his residency in Emergency Medicine at St. Barnabas Hospital in the Bronx. He currently practices at New York Presbyterian-Lawrence Hospital. Dr. Drazner is an Assistant Professor of Emergency Medicine at the Columbia University Medical Center.

Dr. Dwight Aberle is an assistant professor of radiology at Columbia University Vagelos College of Physicians and Surgeons (VP&S) and an attending radiologist at NewYork-Presbyterian Hospital. Dr. Aberle earned his medical degree at NYU Grossman School of Medicine and completed a diagnostic radiology residency at NewYork-Presbyterian/CUIMC, where he served as chief resident. He then went on to complete an Abdominal Imaging Fellowship with the Department of Radiology at VP&S before joining our faculty.

Mark A. Apfelbaum, MD, is an Associate Professor of Medicine at Columbia University College of Physicians and Surgeons and Director of Cardiac Catheterization Laboratories at NewYork-Presbyterian Westchester. Dr. Apfelbaum received his M.D. degree from Columbia University College of Physicians and Surgeons. He pursued his residency in internal medicine at Columbia Presbyterian, serving as chief resident for the Department of Medicine. He was then a visiting clinical fellow in internal medicine for the Division of Cardiology at Columbia, followed by a visiting clinical fellowship in invasive and interventional cardiology there. Dr. Apfelbaum is a diplomate of the National Board of Medical Examiners, the American Board of Internal Medicine, the Subspecialty Board of Cardiovascular Disease, and the Subspecialty Board of Interventional Cardiology.