Dr. Wenger is an active general internist and carries out research in the empirical study of clinical ethics, care of and decision making for the older patient, and quality of health care. He directs the Assessing Care of the Vulnerable Elders project, which has developed a quality-of-care assessment system for vulnerable older persons and interventions to improve care for this group. Other areas of interest include medication adherence, teaching clinical ethics, and measuring the quality of end-of-life care.