Medical improvisation (improv) applies theater principles and techniques to improve communication and teamwork with health professionals (HP). Improv curricula have increased over time, but little is known about best practices in curricula development, implementation, and assessment. We sought to complete a state-of-the-art review of medical improv curricula to teach HP learners communication skills. A literature search of MEDLINE and 8 other databases on HP medical education and medical improv communication curricula occurred. We screened 1869 articles published from 2012 to 2022. Seventeen articles were selected for extraction and synthesis. Common curricular goals included improving interprofessional, interpersonal, and empathetic communication. Curricula often lacked alignment between learning objectives and improv exercises. Sessions occurred once (65%) or were longitudinal (35%). Only 24% reported a full description of their intervention. Few reported details on the content of curricula. Evaluations often focused on feasibility and acceptability. Heterogeneity exists in the development, implementation, and assessment of improv curricula. Low-quality evidence was provided to support the use of medical improv to teach communication skills to HP learners. Improv curricula were feasible, and acceptable to learners. We offer recommendations to guide future medical improv curricula development.