The Department provides services through a statewide network of programs. The core of the system is a network of 14 community mental health centers, ten nonprofit agencies with which the ODMHSAS contracts, and four state-operated centers. The state is geographically divided into 17 service areas each served by a community mental health center (some centers serve multiple areas). Each center is responsible for providing a comprehensive array of services within its service area. However, individuals seeking services may choose to seek services anywhere in the state. This service structure is vastly different from the organization's original model for treatment in the mid-1960s, which was primarily in the form of institutionalization in large state hospitals.