Chestnut Health Systems Inc
12 North 64th Street, Belleville, IL 62223

Of the 11 treatment providers we list in Belleville, 8 (73%) report dual diagnosis services.
Dual diagnosis programs treat substance use together with mental health conditions such as depression, anxiety, PTSD or bipolar disorder. Treating both at once tends to work better than treating them separately.
12 North 64th Street, Belleville, IL 62223
12 North 64th Street, Belleville, IL 62223
1 Bronze Pointe Boulevard, Belleville, IL 62226
1 Bronze Pointe Boulevard, Belleville, IL 62226
1450 Caseyville Avenue, Belleville, IL 62226
1450 Caseyville Avenue, Belleville, IL 62226
1450 Caseyville Avenue, Belleville, IL 62226
1450 Caseyville Avenue, Belleville, IL 62226
We list 8 facilities in Belleville, IL reporting dual diagnosis services. Call ahead to confirm availability and wait times.
Ask each facility whether they are licensed by Illinois, whether they accept your insurance or Medicaid, how soon they can admit you, and whether they offer medication for opioid or alcohol use disorder.
Last reviewed 2026-10-06. Facility details come from SAMHSA's FindTreatment.gov locator and facility-provided information. Confirm services, availability and payment directly with the facility.