Sean Drazner, DO

Patricia J. Rivera Toolan, MD is a highly skilled emergency medicine specialist located in Bronxville, NY. With a focus on providing exceptional care to patients of all ages, Dr. Rivera Toolan is affiliated with NewYork-Presbyterian Westchester and is an Assistant Professor of Emergency Medicine at Columbia University Medical Center. ColumbiaDoctors is a leading healthcare provider offering a wide range of specialties and services, including emergency medicine. With a team of experienced physicians and a commitment to patient-centered care, ColumbiaDoctors strives to deliver the highest quality medical care to the community.Generated from the website

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.