Chestnut Health Systems, Inc.

Chestnut Health Systems is a multi-service health organization providing care in Illinois and Missouri. Its service lines include primary care, dental care, mental health and substance use treatment, research, and community partnership programs. The organization operates as an FQHC and a CCBHC according to its site navigation, and it describes accepting insurance, offering sliding fee discounts, and working to make care accessible to all.

On the mental health side, listed services include crisis services, counseling and family services, psychiatry, prevention, and recovery support. Substance use services include crisis services, residential treatment, outpatient treatment, medication assisted treatment and recovery, medically monitored detoxification, and ambulatory withdrawal management. Additional support services listed are housing, support services for veteran families, recovery support, and a pregnant and postpartum program. Prevention offerings include overdose awareness, harm reduction and naloxone, gambling prevention, and community education. Community-facing programs include school-based services, community health workers, and a MetroLink transit project. Primary care services listed include behavioral health, psychiatry, medication assisted treatment and recovery, lab and pharmacy, and insurance enrollment assistance.

Chestnut also operates the Lighthouse Institute, its research arm, which includes centers such as the Evidence Based Practice Center, the GAIN Coordinating Center, the JEAP Research Center, the Family Coaching Center, the Center for Implementation Science, a Chicago Regional Evaluation Office, a Behavioral Health Workplace Innovation center, and a National Native Center of Excellence. The Institute publishes research and evaluation projects, staff publications, and hosts the William White Library, an archive of papers, books, blogs, and historical publications on addiction treatment and recovery mutual aid history.

The site advertises walk-in hours for behavioral health assessments at select locations, along with a patient portal, forms, payment information, and financial assistance resources. Appointments can be scheduled through the site's contact and appointment pages.