Founded in 1979, PSI offers exciting and innovative solutions to individuals and families facing the challenges of mental illness, developmental disabilities, abuse and neglect. PSI takes its trade name from the Greek letter “psi”, the professional symbol for psychology. The PSI mission is “Helping People Grow®”. Our dedicated and caring staff embrace this mission daily. PSI is a multi-state agency employing several hundred staff and serving several thousand persons daily. Starting in the 20th century and continuing in the 21st, PSI adapts technology, theories, and best practices in our training, treatment, and social services. PSI is a Medicaid-Medicare provider; we accept all major health insurances. We contract with states for our behavioral health, foster care and adoption services.