Detroit, MI Drug Rehab Centers - Inpatient, Outpatient, Detox and Free Treatment. 36 medicare programs, 17 inpatient rehabs, 42 drug rehabs that take PPO insurance like Cigna, 8 detox centers, 46 outpatient rehabs. Updated September, 2021. National Non Profit Helpline - 1-877-882-9275. Our National Non Profit Helpline is a 24/7, 365-day-a-year ....