Greystone Park Psychiatric Hospital is a mental health treatment facility serving Morris Plains and the surrounding New Jersey area. The facility provides specialized care tailored to meet the unique needs of each client.
Learn more about Inpatient Treatment, Psychiatric Services, Group Therapy.
Greystone Park Psychiatric Hospital in Morris Plains, New Jersey is a state-operated inpatient psychiatric hospital providing comprehensive behavioral health treatment for adults and seniors across Northern New Jersey. As a 506-bed public psychiatric facility under the New Jersey Department of Health, Greystone delivers structured, patient-centered care in a secure hospital setting. Individuals are typically admitted following stabilization at short-term care facilities and receive continued inpatient psychiatric treatment focused on safety, clinical stabilization, and long-term recovery.
Treatment at Greystone Park Psychiatric Hospital is grounded in evidence-based and recovery-oriented practices tailored to each patient’s strengths, needs, and preferences. Services include therapeutic group programming, vocational rehabilitation, activity-based therapies, academic education for eligible younger adults, and specialized substance use recovery programming for individuals with co-occurring disorders. Discharge planning begins at admission, with multidisciplinary teams coordinating appropriate housing, community placement, and aftercare services to support successful reintegration. With a longstanding history dating back to 1876 and a modern facility opened in 2008, Greystone remains a central provider of inpatient psychiatric services for the State of New Jersey.