The Massachusetts Child Psychiatry Access Program is a statewide public mental health initiative designed to provide consultation, care navigation, and education to assist pediatric primary care providers in addressing mental health problems for children and families. To improve program performance, adapt to changes in the environment of pediatric primary care services, and ensure the program's long-term sustainability, program leadership in consultation with the Massachusetts Department of Mental Health embarked on a process of redesign. The redesign process is described, moving from an initial strategic assessment of program and the planning of structural and functional changes, through transition and implementation.