New models of practice emphasizing collaboration between child and adolescent psychiatrists and primary care providers are emerging for the improvement of access to care for children with psychiatric problems. Mental health services, historically “carved out” from general healthcare delivery systems, are usually distinctly separate from primary care. Consequently, child and adolescent psychiatrists designing and implementing these models in their own communities must overcome significant clinical, interpersonal, and administrative challenges. The presenters of this Workshop review models of practice highlighting collaboration between primary care and child psychiatry, and discuss the evolving role of the child and adolescent psychiatrist within these models. Participants discuss strategies for managing relationships with primary care providers in order to become an integrated consultant providing education, guidance, and collaborative care. Strategies for overcoming systemic and administrative barriers to the implementation of collaborative practice models are discussed.