The Voluntary Review of Quality of Care Program is the American College of Obstetricians and Gynecologists' program of peer review. It is dedicated to quality improvement, patient safety, and peer review, which is conducted by a national professional specialty organization. Since the program's inception, 236 hospitals providing obstetric and gynecologic services in this country have been reviewed. This article presents the results of these reviews. Common problems are identified and possible corrective action is recommended. This program represents a useful model of national peer review activity that can impact patient care.