Medical professionals make costly and critical decisions constantly in their practices. They have a need to do so quickly and efficiently and with as much information as possible. Important decisions are as diverse as critical patient needs to office practice issues. Researchers have begun to explore how decision support technologies can be used to facilitate the many needs of the healthcare industry from medical practices to hospitals. Research has shown that using decision support systems in healthcare has great promise, but many research questions have been left unanswered and in some cases, unasked. In this work, we begin the process of identifying gaps and future research directions.