Joel Stein, M.D.

Diane A. Thompson, MD, MS, is an instructor in rehabilitation medicine at Columbia University Medical Center's Department of Rehabilitation and Regenerative Medicine. She earned an undergraduate and graduate degree in nursing from Hunter College...

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.

Christopher Irobunda, MD, is an Associate Professor of Medicine and an Interventional Cardiologist. He also serves as Vice Chair of Faculty Development in the Department of Medicine, with a focus on faculty advancement, health equity, and community engagement.Dr. Irobunda earned his MD/PhD through the Medical Scientist Training Program at the Albert Einstein College of Medicine in the Bronx, NY. His doctoral research in Molecular Pharmacology focused on the cyclic adenosine monophosphate (cAMP)/beta-adrenergic signal transduction system. He went on to complete his internship and residency in internal medicine at New York University Medical Center, followed by fellowship training in General and Interventional Cardiology at Columbia University Irving Medical Center.A full-time faculty member at Columbia since 2003, Dr. Irobunda now dedicates his career to patient care, mentorship, and the education of future physicians. Dr. Irobunda is ardently dedicated to uncompromised patient care and teaching. His primary focus is individualized patient care and patient advocacy. Given his training as a medical scientist, it is hardly surprising that he is a keen diagnostician. He has a penchant for complex cardiac issues and other medical problems that can sometimes mask or aggravate the cardiac disease. His aptitude for unraveling these medical conundrums has led to medical diagnoses for patients who have come to him for second and even third opinions. However, above all else, his true genius is his ability to relate to his patients with intelligence, curiosity, patience, compassion, and humor. His ability to waylay even the most apprehensive of patients with his aura of reassurance and understanding has garnered him a continually growing medical practice. Again and again, individuals will refer family members and friends because of the empathy and level of care constantly provided. Indeed, his unceasing diligence has led him to become a physician member of Columbia University Medical Centers Patient Facilitated Services, an organization directed at patient satisfaction and outreach. Dr. Irobunda has also been the primary cardiologist for patients undergoing liver transplant evaluations at New York Presbyterian since 2004. When not in his private practice, he takes great pleasure in helping train the new influx of physicians in the only ethical way to practice medicine—patient-centered care. Dr. Irobunda has been a Supervisor and Attending Faculty for the Fundamentals of Clinical Medicine for First Year Medical Students at Columbia University College of Physicians and Surgeons since 2011, a program that endeavors to instill exceptional patient-doctor communication and trust. He encourages future medical practitioners to listen to the patient and learn to interpret and analyze the information being imported; to realize that the seemingly insignificant details sometimes lead to the culprit of an individual's illness. He has been a lecturer with International Postgraduate Organization for Knowledgetransfer, Research, and Teaching Excellent Students (IPOKRaTES) in Europe. IPOKRaTES offers opportunities for physicians from a plethora of countries to observe and gain instruction regarding differing methods in patient care practices. Since the summer of 2012, Dr. Irobunda has become involved in New York Presbyterian Hospital's Lange Youth Program, which seeks to prepare and enumerate the rigors of medical school for high school students. Dr. Irobunda is active in numerous community outreach organizations-Abyssian Baptist Church (NY), JP Morgan Chase Employee Education Program, Riverside Church Seniors, and Sister to Sister: The Women's Heart Health Foundation, to name a few. He seeks to educate the public on cardiovascular issues and ways to make everyday lifestyle modifications to help reduce these risks. In addition to being an interventional cardiologist who can perform angioplasties and stent placements, he emphasizes the prevention and treatment of heart disease through diet, exercise, and medical therapy.