Team-based care models such as the Patient-Centered Medical Home are associated with improved patient health outcomes, better team coordination and collaboration, and increased well-being among health care professionals. Despite these attributes, hindrances to wider adoption remain. In addition, some health care professionals have sought to practice independent of the physician-led health care team, potentially undermining patient access to physicians who have the skills and training to deliver whole-person, comprehensive, and longitudinal care. In this paper, the American College of Physicians reaffirms the importance of the physician-led health care team and offers policy recommendations on professionalism, payment models, training, licensure, and research to support the expansion of dynamic clinical care teams.