Kingsbrook is accredited by the New York State Department of Health, the Joint Commission on Accreditation of Health Care Organizations (JCAHO), the New York State Office of Mental Health (OMH), and the Commission on Accreditation of Rehabilitation Facilities (CARF). Kingsbrook's long-term care facility, Rutland Nursing Home, is accredited by the New York State Department of Health. The Medical Center is a voluntary not-for-profit institution and a member of Greater New York Hospital Association (GNYHA) and the Healthcare Association of New York State (HANYS).