People with autism spectrum disorder (ASD) and other developmental disabilities have poorer health and face unique barriers to health care compared to people without disabilities. These health disparities can be partially attributed to physicians' limited knowledge about caring for patients with developmental disabilities. The purpose of this study was to determine the effectiveness of ASD training for medical students. Our training included a lecture and a panel presentation that featured people with ASD and family members. Students reported improved knowledge, skills, confidence, and comfort in caring for patients with ASD.