Bronx River Medical Associates PC

COVID-19 Coronavirus Update: To keep our patients as healthy as possible, we are offering video visits with our doctors and temporarily not seeing in-person appointments at some locations. Before coming into one of our locations, please call ahead so we can help determine which type of visit or location is best for you.

Dr. Julie Choi is a board-certified radiation oncologist at New York-Presbyterian Westchester Hospital and an assistant professor of radiation oncology at Columbia University Irving Medical Center. She sees patients at New York-Presbyterian Westchester Hospital in Bronxville NY. Her clinical focus is on breast cancer, gynecologic cancers, CNS and radiosurgery. Her research interests focus on community needs and metastatic breast cancer. Dr. Choi grew up in St. Louis, Missouri and received her B.A. and M.D. degrees from the University of Missouri Kansas City Medical School. She became board certified in Internal Medicine before completing her radiation oncology training at New York Presbyterian Hospital, Columbia University Medical Center Campus, where she served as Chief Resident. She then served as an attending at New York Presbyterian Hospital /Columbia University Medical Center for 5 years before transferring to a community setting. She has been practicing for the past 15 years in the Westchester community dedicated to prioritizing quality patient care in her community. She sees patients at the New York Presbyterian Westchester Hospital, where she is an active member of the Breast Disease Management Team, the Commission on Cancer and the Clinical Research Committee which helps bring national cooperative group studies to NYP Westchester Hospital. She provides a full spectrum of precision radiation therapy techniques to deliver patients the most advanced treatments available. She is a member of numerous organizations and has been recognized annually in the Westchester Magazine Top Doctors since 2016 and selected as a Castle Connolly Top Doctor by her peers annually since 2014. She most recently has been the recipient of The Academy of Community and Public Service Award representing the Vagelos College of Physicians and Surgeons for Columbia University, class of 2023.

Dr. S. Sunghyun Yoon is the Chief of the Division of Surgical Oncology and Vice-Chair of Surgical Oncology Research and Education in the Department of Surgery at Columbia University Irving Medical Center (CUIMC). Dr. Yoon is a national and international expert in the treatment of patients with sarcomas and other soft tissue tumors, gastric (stomach) and gastroesophageal cancers, gastrointestinal stromal tumors (GISTs), and melanoma. He also has over 18 years of experience in the treatment of other gastrointestinal and abdominal tumors, hepatobiliary tumors, neuroendocrine/adrenal tumors, lymphomas, and spleen tumors. He has been the principal investigator of several clinical trials examining novel treatment strategies and given numerous invited national and international lectures in relation to these cancers. Several of these trials have investigated the treatment of sarcomas, especially abdominal/retroperitoneal sarcomas, with advanced radiation techniques such as proton beam radiation and aggressive surgical resection to minimize local recurrence. Read More About These Treatments: https://columbiasurgery.org/conditions-and-treatments/retroperitoneal-sarcomas-and-pelvic-sarcomas Dr. Yoon was an early advocate for minimally invasive robotic surgery and has performed over 300 robotic procedures including robotic gastrectomies (stomach removal). He has one of the world’s largest experiences in performing prophylactic total gastrectomies for patients with hereditary diffuse gastric cancer (HDGC syndrome) secondary to germline CDH1 mutation. He pioneered a technique for connection of the small bowel to the esophagus after total gastrectomy that is used by former surgical trainees and colleagues throughout the country due to its extremely low leakage rate. Dr. Yoon graduated from Harvard University and received his M.D. from the University of California at San Diego. He completed his residency in general surgery at Massachusetts General Hospital and his fellowship in surgical oncology at the Memorial Sloan-Kettering Cancer Center. He was an Associate Professor of Surgery at Massachusetts General Hospital and Harvard Medical School before joining the staff at Memorial Sloan-Kettering Cancer Center in 2012. Dr. Yoon was an Attending Surgeon in the Division of Gastric and Mixed Tumors at Memorial Sloan Kettering Cancer Center and a Professor of Surgery at Weill Cornell Medical College before joining CUIMC in 2021. Dr. Yoon’s main research interests are in cancer stem cells and targeted biological agents in combination with chemotherapy and radiation therapy. His laboratory has been funded by the National Institutes of Health/National Cancer Institute for 18 years and strives to translate new research discoveries into the clinic. Dr. Yoon is also part of multi-institution research groups funded by Stand Up To Cancer and the DeGregorio Family Foundation to discover early diagnostics and new therapies for gastric cancer. His clinical and research efforts have led to over 150 original research articles, book chapters, and reviews. For a complete list of publications, please visit NCBI.