Harbor Oaks Hospital respects the dignity of each individual patient, and cares deeply about making a lasting difference. Treatment philosophy comes from experience. The staff knows that people can change and that chemical dependency and mental illness are treatable diseases. Because substance abuse and mental health disorders often co-occur, treatment programs are designed to treat the whole person. Adult Services Harbor Oaks Hospital offers Inpatient and Partial Hospitalization Programs for adults ages 18 and older.