Kenneth Prager, born on January 3, 1943, is an American physician and academic renowned for his contributions to medical ethics and pulmonary medicine. Raised in a Modern Orthodox Jewish family in Brooklyn, New York, he is the younger brother of Dennis Prager, a prominent conservative radio host and author. Kenneth pursued a distinguished career in medicine, maintaining a private life away from public media. He is Professor of Medicine in the Division of Pulmonary, Allergy and Critical Care Medicine at Columbia University Medical Center, where he specializes in respiratory diseases, allergies, and intensive care. Additionally, he serves as Director of Clinical Ethics and Chairman of the Medical Ethics Committee, guiding institutional policies on ethical dilemmas in healthcare. His work emphasizes the intersection of medicine, ethics, and patient advocacy, influencing standards in medical decision-making and end-of-life care. Prager's Jewish upbringing in a close-knit family likely informed his ethical perspectives, though he maintains a professional focus distinct from his brother's public conservatism. Throughout his career, he has contributed to academic literature and institutional reforms, fostering a commitment to compassionate and principled medical practice. Residing primarily in New York, he continues to shape the field of bioethics at one of the nation's premier medical institutions, with no major public controversies or legal issues documented in available records.