We list 6 dual diagnosis treatment centers in Merrillville, IN, based on SAMHSA's FindTreatment.gov data. Compare services, insurance accepted and accreditation, or call for free help choosing.
Dual Diagnosis: the basics
Dual diagnosis treatment is care for people who have both a substance use disorder and a mental health condition, such as depression, anxiety, PTSD or bipolar disorder. The best programs treat both conditions at the same time with one coordinated team, combining therapy, psychiatric care and, when needed, medication for addiction. Read the full guide →
2026 rankings
Ranked by the StartDrugRehab Score: accreditation, levels of care, patient ratings and payment options. Featured or claimed status never affects rank. How we rank
Best for: Detox and residential careJoint Commission
Why it made our list: Joint Commission accredited; offers detox, residential care, IOP, and outpatient care; accepts private insurance, Medicaid, and Medicare.
Best for: Intensive outpatient careJoint CommissionCARF
Why it made our list: Joint Commission and CARF accredited; offers IOP, outpatient care, and dual diagnosis care; accepts private insurance, TRICARE, and self-pay.
Best for: Intensive outpatient care
Why it made our list: Offers IOP, outpatient care, and dual diagnosis care; accepts private insurance, self-pay, and sliding-scale fees.
Best for: Intensive outpatient care
Why it made our list: Offers IOP, outpatient care, and dual diagnosis care; accepts private insurance, Medicaid, and self-pay.
Best for: Outpatient careCOA
Why it made our list: COA accredited; offers outpatient care and dual diagnosis care; accepts Medicaid and self-pay.
Best for: Intensive outpatient care
Why it made our list: Offers IOP, outpatient care, and dual diagnosis care; accepts private insurance, self-pay, and sliding-scale fees.
Merrillville, IN 46410
Joint Commission accredited
Levels of care
Payment accepted
Medicaid · Medicare · Private insurance +4 more
“Get help” calls our free helpline, not this facility.
Merrillville, IN 46410
Joint Commission · CARF accredited
Levels of care
Payment accepted
Private insurance · TRICARE · Self-pay
“Get help” calls our free helpline, not this facility.
Merrillville, IN 46410
Levels of care
Payment accepted
Private insurance · Self-pay · Sliding scale
“Get help” calls our free helpline, not this facility.
Merrillville, IN 46410
Levels of care
Payment accepted
Private insurance · Self-pay · Sliding scale
“Get help” calls our free helpline, not this facility.
Merrillville, IN 46410
Levels of care
Payment accepted
Medicaid · Private insurance · Self-pay +1 more
“Get help” calls our free helpline, not this facility.
Merrillville, IN 46410
COA accredited
Levels of care
Payment accepted
Medicaid · Self-pay
“Get help” calls our free helpline, not this facility.
We list 6 dual diagnosis treatment centers in Merrillville, IN, based on SAMHSA's FindTreatment.gov data (updated October 2026).
Look for state licensing and accreditation (The Joint Commission or CARF), the right level of care for your needs, evidence-based therapies, and insurance compatibility. Read our guide to choosing a rehab or call (833) 589-6933 to talk it through.
Most private plans and Medicaid cover substance use treatment when it's medically necessary, but benefits vary by plan and network. Call (833) 589-6933 for a free, confidential benefits check.
Source: SAMHSA FindTreatment.gov, data updated October 2026. Listings are not endorsements.
