Abstract Critics today charge that managed care organizations, intent on reducing costs to ensure survival and profitability, have forsaken public health. In fact, managed care and public health face common challenges and share common interests. Public health problems ultimately affect managed care enrollees and increase the cost of their care. Managed care organizations, then, must help reduce community-wide health risks. Public health agencies, traditionally responsible for population health, today face serious challenges due to budget reductions and public indifference. The article to follow proposes a model for mutually beneficial collaboration between managed care and public health. Programs linking managed care with public health in the Puget Sound area illustrate this model's feasibility and value.