In order to characterize use of the Internet in medical geriatrics education programs, 130 medical education programs in the U.S. that train medical students, interns, residents, fellows and practicing physicians were asked to complete a survey developed by the Consortium of E-Learning in Geriatrics Instruction (CELGI). Sixty-eight programs (52.3%) returned surveys. Fifty-four (79%) of those responding reported using the Internet specifically for geriatric medical education, and 38 (56%) reported they are developing Internet materials. Twenty-three undergraduate, 31 graduate, and 26 continuing medical education programs reported at least 25% of their curriculum was Internet-based. Users and developers of medical geriatric Internet materials had more full-time faculty and nonclinical faculty. The results of our survey indicate that the Internet is being widely used in medical geriatric education. (Contains 4 tables.)