Holcomb Behavioral Health Systems , accredited by the Joint Commission, provides a full continuum of care for people facing mental health, substance abuse, intellectual and developmental disabilities, and co-occurring disorders across southern and central Pennsylvania, central New Jersey, Delaware, and Maryland. Our services span educational, employment, vocational, residential, habilitative, and behavioral health support, delivered through a network of national and international affiliates — giving us a comprehensive, holistic approach to improving lives.