His primary areas of teaching, public service, and research are in public health (policy and practice; tobacco prevention/control) and ethical issues in health care. Currently he teaches courses in public health, ethics, and health care delivery systems. Since 2003 he has been involved in the national leadership of the American Public Health Association. He is the author/editor of two books, Medical Ethics and the Law Implications for Public Policy (1981) and Ethics and Health Administration Ethical Decision Making in Health Management (1986) and, has authored journal articles on a variety of public health and ethical issues and policies.