Spring Harbor Hospital was established in 1999 when Maine Medical Center purchased the for-profit Jackson Brook Institute psychiatric hospital and its affiliated Smith House Counseling Centers. In October 2001, Spring Harbor became the freestanding, nonprofit mental health hospital of MaineHealth, the integrated healthcare delivery system for southern, central, and western Maine.
Today, Spring Harbor plays both a regional and local role in mental health care in Maine. As a division of Maine Behavioral Healthcare, Spring Harbor is clinically integrated with mental health providers, hospitals and primary care sites to ensure easy and timely access to treatment and safe and effective transitions between services for individuals throughout Maine. On a local level, Spring Harbor fulfills its mission as southern Maine's comprehensive provider of inpatient services for individuals experiencing mental illness and dual disorders concerns.