Sleep disorders are frequently under assessed and not well understood by medical practitioners. This study investigated medical practitioners’ knowledge of, experience with, and treatment considerations for sleep disorders, with a particular emphasis on nightmares. Eighty-eight individuals practicing medicine in the United States completed a survey eliciting information in three domains: (a) professional experience with nightmares, (b) knowledge of nightmares, and (c) attitudes about treatment of sleep disturbances. Seventy percent of participants reported a lack of professional experience with nightmares, 78% endorsed inaccurate definitions of a nightmares, and 82% considered sleep disorders to be a secondary problem, with 75% considering nightmares a secondary problem. Seventy-two percent of participants reported they would be likely to consider psychological treatment for nightmares. Results suggest that medical practitioners may not be receiving updated and/or adequate education about sleep disorders, including nightmares. This lack of information may contribute to sleep disorders being under assessed and untreated.