Outpatient Addiction treatment centers in Nashua, New Hampshire provide therapy and medication management as well as dual diagnosis mental health services for individuals with substance use disorders. According to the National Institute on Drug Abuse, over 20 million people in the U.S. struggle with substance use, yet only about 10% receive the care they need. Nashua has a population of over 91,000 people during a time when the state has dealt with rising opioid-related deaths and alcohol dependence make timely access to treatment critical.
These 9 facilities represent the most comprehensive and licensed addiction rehab programs in NH. Each offers evidence-based care for individuals with drug addiction, alcohol dependency, and co-occurring mental health conditions.
Treatment modalities at these centers include:
- Medical detox for placement opioid, alcohol, and stimulant withdrawal
- outpatient substance abuse programs
- Dual diagnosis rehab for addiction and mental health disorders
- Evidence-based therapies like CBT, DBT, MAT, and EMDR
- Medication Assisted Treatment

1. Discover Health Group – Nashua
Discover Health Group is a dual diagnosis addiction treatment center providing addiction rehab in Nashua, NH. Treatment integrates medication-assisted therapy (MAT), individual counseling, and psychiatric care for patients with both addiction and mental health disorders. The clinical team maintains a 1:6 staff-to-client ratio, promoting personalized recovery outcomes. Research from NCBI shows integrated dual-diagnosis care reduces both relapse rates and psychiatric symptoms with a combined effect size above 0.60. Discover Health Group is in network with most insurance providers including blue cross blue shield, Tricare and more. They are licensed with the state of NH DCF and hold a JCAHO accreditation.
Discover Health Group: Drug & Alcohol Rehab in New Hampshire
74 Northeastern Blvd Suite 21 A-B, Nashua, NH 03062
(603) 316-6148
https://discoverhealthgroup.com/
2.GateHouse Treatment Drug & Alcohol Rehab Center – Nashua, NH
3. Ridge RTC – Adolescent Addiction Recovery
Ridge RTC, specializes in residential addiction treatment for teens. Located in Nashua, the center treats adolescent drug and alcohol dependency through dialectical behavior therapy (DBT), psychiatric assessments, and trauma-informed counseling. A 2011 meta-analysis reports early intervention in adolescent rehab programs decreases substance use significantly (effect size ≈ 0.24).
4.The Process Recovery Center
The Process Recovery Center delivers outpatient rehab for adults struggling with substance use disorder, and behavioral health issues. While not a detox facility, it supports recovery with Cognitive Behavioral therapy (CBT) and MAT. The center has a 4.9 star rating with over 50 reviews and provides treatment in a structured, therapeutic environment.
7. Granite Recovery Centers – Multiple Locations Including Nashua
Granite Recovery Centers provide inpatient drug rehab, medical detox, and dual diagnosis programs across Effingham, Salem, and Derry. Evidence-based services include CBT, EMDR, and 12-step facilitation. A study by Gerald Stahler (2016) found 65% of dual-diagnosis clients complete inpatient programs, outperforming outpatient completion rates. Granite Recovery delivers structured rehab environments and alumni support networks.
How to Choose an Addiction Treatment Center in Nashua New Hampshire
To choose the right addiction rehab center in New Hampshire, evaluate the facility’s clinical licenses, treatment levels, and specialty in co-occurring disorders.
9 Key Factors to Evaluate:
- Medical detox capability for opioids, alcohol, and benzodiazepines
- Inpatient and outpatient rehab options with continuity of care
- Dual diagnosis programs for addiction and psychiatric disorders
- Evidence-based therapies (e.g., MAT, CBT, EMDR, DBT)
- Qualified clinical staff: addiction counselors, psychiatrists, nurses
- Relapse prevention services and long-term support groups
- State or national accreditation (e.g., CARF, The Joint Commission)
- Accepted insurance plans and financial transparency
Specialized programs for teens, veterans, or trauma survivors
Related Post: Best Addiction Treatment Centers In New Hampshire

