Longitudinal integrated clerkships (LICs) have been implemented worldwide to increase authentic student participation in patient care over time. Studies have shown benefits of the model include the ability of LICs to attract future practitioners to underserved areas, student engagement in advocacy, and development of an "ethic of caring." Less is known, however, about how LICs impart their benefits, although LICs may strengthen professional identity. As such, this study aimed to explore medical student professional identity construction through time within LICs internationally.