Rabbi Professor Moshe D. Tendler, noted authority on medical ethics and the relationship of medicine and science to Jewish law, is rosh yeshivah at the Yeshiva University–affiliated Rabbi Isaac Elchanan Theological Seminary (RIETS) and professor of biology at Yeshiva College, and holds the Rabbi Isaac and Bella Tendler Chair in Jewish Medical Ethics at Yeshiva University. Rabbi Tendler was ordained at RIETS in 1949 and received Yoreh Yoreh in 1953 from Rabbi Moshe Feinstein, of righteous memory. He earned a PhD in biology from Columbia University in 1957. He has served on the Medical Ethics Task Force of the Federation of Jewish Philanthropies, for which he edited the Compendium of Medical Ethics. For nine years he served as its chairman. For decades he chaired the Bioethical Commission of the Rabbinical Council of America. A former president of the Association of Orthodox Jewish Scientists and current member of its board, Rabbi Tendler is author of Pardes Rimonim (a text on Jewish family life); coauthor with Professor Fred Rosner, MD, of Practical Medical Halachah, a primer for physicians; and author of Care of the Critically Ill—Responsa of Rav Moshe Feinstein; as well as many articles on science and religion in leading publications. He is frequently consulted by the media and public officials on ethical issues.