People

Dr. Chul S. Hyun earned his B.S. from Johns Hopkins University and M.D. from the University of Miami School of Medicine. He completed his Internal Medicine Internship and Residency at Georgetown University Medical Center, followed by a Gastroenterology and Liver Fellowship at Yale University School of Medicine. Additionally, he holds a Ph.D. in Biophysics from the University of Rochester School of Medicine and an MPH from Columbia University. Dr. Hyun furthered his academic journey with a postdoctoral fellowship in Physiology at the University of Chicago School of Medicine. Board-certified in Gastroenterology, Dr. Hyun served as a faculty member in the Division of Gastroenterology and Hepatology at Weill Cornell Medical College from 1996 to 2018. He has held numerous leadership roles, including Board Member of the New Jersey State Board of Medical Examiners (2017–2018), President of the Korean American Medical Association (2011–2013), and Founding President of the World Korean Medical Organization (2012–2015). Currently, Dr. Hyun is the publisher of NexBioHealth, a quarterly magazine dedicated to mentoring and fostering the next generation of medical students and young physicians worldwide. He has established several nonprofit health organizations, such as the Center for Viral Hepatitis (CVH) and the Stomach Cancer Task Force (SCTF). Additionally, he is an accomplished author whose work addresses community health and health disparities. As the inaugural director of the Gastric Cancer Prevention and Screening Program at Yale School of Medicine, Dr. Hyun leverages decades of clinical expertise in gastric and gastrointestinal care. His mission is to advance the prevention, early detection, and management of gastric cancer, with a focus on reducing health disparities associated with the disease in the United States. A passionate marathon runner, Dr. Hyun has completed 120 marathons around the world. In his recently published memoir, I Just Came to See You, he writes, “Life is a marathon, not a sprint.” This poignant book chronicles his extraordinary journey from childhood in South Korea to a life of global achievements. It offers readers a compelling narrative about resilience, culture, and identity while inspiring them to pursue their dreams regardless of the challenges they face.

Dr. Hong holds degrees in Economics–Mathematics, Medicine, and Public Health and has collaborated extensively on global health research with Dr. Hyun.

Won Jae Huh completed his medical education at the Seoul National University in South Korea. Then he pursued Ph.D. training in Developmental Biology at Washington University in St. Louis. His Ph.D. thesis work with Dr. Jason Mills focused on the transcriptional regulation of gastric chief cell differentiation. Won Jae completed his residency training in Anatomic Pathology at Montefiore Medical Center/Albert Einstein College of Medicine, followed by fellowship in Gastrointestinal and Liver Pathology at Vanderbilt University Medical Center. He did his postdoctoral research training on EGFR and Notch signaling crosstalk in gastric premalignant conditions with Dr. Robert Coffey at Vanderbilt University Medical Center. Won Jae is a recipient of the NIDDK Clinical Scientist Career Development Award. He was an assistant professor at Vanderbilt University Medical Center prior to joining the Department of Pathology at Yale School of Medicine in 2021.

Dr. Sarah Soyeon Oh earned her B.A. in Political Science and International Relations and her Ph.D. in Public Health from Yonsei University in Seoul, Korea. She completed a postdoctoral fellowship at the Harvard T.H. Chan School of Public Health and taught as a nanocourse instructor through the Harvard Medical School Curriculum Fellows Program. She has held teaching and research appointments at Yonsei University's Graduate School of Public Health, Gachon University College of Medicine, and Ewha Womans University Mokdong Hospital. Her research integrates statistical epidemiology and machine learning to develop predictive models for complex health issues, with a focus on alcohol, tobacco, and substance use disorders, as well as related conditions such as metabolic syndrome. Dr. Oh is currently a Research Professor at Yonsei University’s Institute for Global Engagement & Empowerment (IGEE), where she leads precision public health research, and serves on the editorial board of IGEE Proceedings, Yonsei’s journal on sustainability and global engagement. Born and raised in Auckland, New Zealand, Dr. Oh identifies as a “Kowi” (Korean Kiwi) and is a lifelong teetotaler. Together with her mother, she translated and published the Korean-language edition of Fetal Alcohol Syndrome: A Guide for Families and Communities by Dr. Ann Streissguth, making the resource accessible to the Korean community.

Jae Il Shin, M.D. Ph.D., is a Professor of Pediatrics at Yonsei University College of Medicine and Division Chief of Pediatric Nephrology, Severance Children’s Hospital, Seoul, South Korea. He is also a Professor of Medical Education at Yonsei University College of Medicine and Deputy Center Director of the Center for Medical Education Training and Professional Development in Yonsei-Donggok Medical Education Institute, where he has lead Evidence-Based Medicine. He was a visiting scholar at Emory University and conducted a meta-research on scientific rigor in stem cell field from 2018 to 2020. He joined as an affiliate in Meta-Research Innovation Center at Stanford (METRICS), Stanford University in 2022 and also launched Severance Underwood Meta-research Center, Institute of Convergence Science, Yonsei University, Seoul, South Korea in 2023. His is interested in various kinds of meta-research topics including bias, reproducibility, spin, scientific retractions and misinterpretation of evidence in the medico-scientific field. He is a SDGs (Sustainable Development Goals) Faculty Fellow, Institute for Global Engagement & Empowerment (IGEE), Yonsei University and he has actively been publishing Global Burden of Disease (GBD) papers as a senior collaborator in the Institute for Health Metrics and Evaluation (IHME), University of Washington, Seattle. He joined as a Professor, Adjunct, Digestive Diseases, Yale University, School of Medicine since July, 2025 and he plans to collaboratively conduct research on various diseases including gastric cancer and several digestive diseases with the excellent professors of Yale University by applying various methodologies including meta-research. He was selected as distinguished faculty fellow (Lee Youn Jae fellow), Yonsei University College of Medicine and also 2024 Highly Cited Researcher (HCR) by Clarivate.

Raghav Sundar, MD, PhD, is an ­­­­ Associate Professor of Medicine (Medical Oncology) and cares for patients with gastrointestinal malignancies including gastroesophageal, hepatobiliary, and colorectal cancer at the Center for Gastrointestinal Cancers at Smilow Cancer Hospital and Yale Cancer Center in New Haven. He earned his Bachelor of Medicine, Bachelor of Surgery from the National University of Singapore where he also completed his PhD. He underwent fellowship training at the Drug Development Unit, Royal Marsden Hospital, UK, and joined Yale from the National University Cancer Institute in Singapore. Dr. Sundar has an interest in experimental therapeutics and was part of the Phase 1 clinical trials team in Singapore where he was a Senior Consultant Medical Oncologist and Research Director for the Department of Haematology-Oncology. His research focuses on identifying biomarkers and therapeutic targets of gastroesophageal cancers and tumors that metastasize to the peritoneum, utilizing multiomic profiling of the tumor microenvironment. Another area of research interest is in chemotherapy induced peripheral neuropathy. He has published over 150 manuscripts in high impact journals such as The Lancet, Cancer Discovery, Journal of Clinical Oncology, British Medical Journal, JAMA Oncology, Gastroenterology and Gut.

Dr. Wang is a cancer epidemiologist who studies the health outcomes and etiology of different types of cancers, especially hematopoietic malignancies.  She is interested in the pattern of care, treatment and cost in older adults. She is also working on traffic exposure and genetic characteristics on the risk of cancer.

Dr. Wilson grew up in Connecticut, before attending Harvard College where he graduated with honors in biochemistry. He then attended medical school at Columbia College of Physicians and Surgeons, before completing his internship, residency, and fellowship at the University of Pennsylvania. In 2012, he received a Masters degree in Clinical Epidemiology, which has informed his research ever since. At Yale since 2014, his goal is using patient-level data and advanced analytics to personalize medicine to each individual patient. He is the creator of the popular online course "Understanding Medical Research: Your Facebook Friend Is Wrong" on the Coursera platform.