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David Edelman, BA

David Edelman is a medical and public health student at the Vagelos College of Physicians and Surgeons and the Mailman School for Public Health at Columbia University. Prior to graduate school, David attended Washington University in St. Louis where he studied Biology and Spanish. David’s joint interests in medicine and Spanish language and cultures led him to volunteer as an interpreter for three years at Casa de Salud, a non-profit community health center for the uninsured and immigrant population of St. Louis. David has continued to serve disadvantaged communities in medical school through his work at the Columbia Harlem Homeless Medical Partnership, or CHHMP, a student-run free clinic run out of the basement of a community church. In addition to his medical work, David has spent four years as a student representative for the Center for Student Wellness, promoting student well-being through student programming and outreach, and is an avid Cleveland sports fan. David is interested in primary prevention and increased access to primary care services for underserved and uninsured communities, and plans to apply for residency in Internal Medicine.


Sarah Godfrey, MD, MPH

Sarah Godfrey is a PGY1 in internal medicine at Columbia University Medical Center. She attended Harvard University where she studied African and African American Studies. While at Harvard, Sarah became interested in social determinants of health and health policy and decided to pursue a postbaccalaureate program at Columbia. She then attended Columbia College of Physicians and Surgeons for medical school and Columbia University Mailman School of Public Health for her MPH. During this time, she volunteered at a student-run clinic for substance users and sex workers, chaired the medical school Honor Committee, and launched a medical student consult service to provide companionship to patients in the hospital. She also developed an interest in medical education and started the initial Harlem Public Health Commute. Her clinical interests include social determinants of health, underserved communities, and incorporating public health into medical education.

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gregory karelas, MSc

Gregory Karelas is a medical student at Columbia VP&S. Since 2002, he has worked to develop health systems in South Asia, East Africa and the U.S. His work has included directing a free district hospital in rural Nepal, developing HIV policy in the US and Rwanda, and building community health programs in inner-city New York. Gregory has a BA in Anthropology from the University of Chicago, and was a Clarendon Scholar at the University of Oxford, where he received a MSc in Medical Anthropology. 


Benjamin Lebwohl, Md, MS

Dr. Lebwohl is a gastroenterologist and epidemiologist specializing in celiac disease, colorectal cancer prevention, and quality of care. He is a graduate of Harvard College, where he majored in music. He received his MD from Columbia College of Physicians and Surgeons in 2003, and then completed his internship, residency, and chief residency in internal medicine at Columbia. He stayed at Columbia as a fellow in Digestive and Liver Disease, during which time he obtained a Masters in Patient Oriented Research from the Department of Biostatistics at the Mailman School of Public Health. Dr. Lebwohl is the Director of Clinical Research at the Celiac Disease Center at Columbia University, where he is collaborating with institutions in the United States and abroad in the areas of the epidemiology, patterns of care, and the natural history of celiac disease.  He is a prior recipient of the American Gastroenterology Association Research Scholar Award (2014-2017), studying the health effects of gluten in large cohort studies. He is an associated scholar at the Karolinska Institute in Stockholm, Sweden, where he performs population-based research in celiac disease in the Department of Medical Epidemiology and Biostatistics. He currently serves as a member of the Gastrointestinal Drugs Advisory Committee of the United States Food and Drug Administration. He is heavily involved in medical education and lectures regularly to medical trainees on topics including celiac disease, public health, clinical decision making, pseudoscience, diarrhea, the Beethoven string quartets, and colorectal cancer screening.