Holcomb Behavioral Health Systems is accredited by the Joint Commission and provides a comprehensive range of services and supports for people with mental health, substance abuse, intellectual and developmental disabilities, and co-occurring disorders throughout southern and central Pennsylvania, central New Jersey, Delaware, and Maryland. A high school diploma and 12 semester credit hours in sociology, social welfare, psychology, gerontology, or other social science, and 2 years experience in public or private human services with 2 years in direct client contact ( 1 year for Lehigh and Northampton counties ).