Primary-care physicians can be important providers human immunodeficiency virus (HIV)-prevention services to their patients. In 1991, 15% of U.S. adults reported having been tested for HIV antibody; of these, 55% reported their most recent HIV test had been in a physician's office or a hospital. During 1992, CDC and the Health Resources and Services Administration (HRSA) commissioned a national survey to characterize the types of HIV prevention services provided by primary-care physicians and barriers to the provision of these services. This report summarizes the results of the survey.