Cognitive readiness can be defined as “possessing the psychological (mental) and sociological (social) knowledge, skills, and attitudes (KSAs) that individuals and team members need to sustain competent professional performance and mental wellbeing in the dynamic, complex, and unpredictable environments of military operations.” Determining if medical personnel are cognitively ready to perform their job poses a considerable challenge to the research community both in terms of understanding what is meant by being cognitively ready and in terms of developing methods to actually assess it. Accordingly, as part of a government-sponsored research program, we set out to gain a better understanding of what is meant by being “cognitively ready” for military medical teams as well as develop a tool for predicting cognitive readiness. In this paper, we describe the design, development, and initial user testing of our Medical Cognitive REadiness Survey Tool (M-CREST).