Chestnut Health Systems Inc

Chestnut Health Systems is a comprehensive healthcare provider offering services across primary care, dental care, and mental health and substance use treatment in Illinois and Missouri. The organization provides integrated services including behavioral health, psychiatry, medication-assisted treatment and recovery, medically monitored detoxification, counseling and family services, residential treatment, outpatient treatment, and recovery support. Services also include crisis intervention, overdose awareness and harm reduction programs, support services for veteran families, and a pregnant and postpartum program. The organization operates as both an FQHC and CCBHC, with walk-in behavioral health assessments available at multiple locations. Chestnut Health Systems is also home to Lighthouse Institute, a research and evaluation center, and the William White Library.