Licensed Master’s Clinician - Substance Use Treatment - Gatehouse Treatment

GateHouse Treatment is part of a nationally recognized group of drug and alcohol addiction treatment centers with facilities in Nashua, New Hampshire. We offer a full range of inpatient and outpatient treatment methods, with customized recovery plans that combine cutting-edge and traditional, evidence-based treatment — because we treat the whole client, not just the disease. 

At GateHouse Treatment, culture isn’t a slogan; it is the foundation of how we deliver care. Our professionals bring unparalleled dedication and compassion, operating as one team unified by a shared purpose: leading men and women out of the horrors of addiction and into lasting recovery. 

We meet clients where they are—physically and emotionally—and we build individualized treatment plans that prioritize understanding over judgment, lasting change over quick fixes, and dignity over stigma. 

Every decision is guided by our commitment to excellence, integrity, and the belief that recovery begins with compassionate, second-to-none care. 

Recognition & Awards (Do Not Edit) 

GateHouse Treatment benefits from the recognition awarded to the broader ICBD corporate ecosystem, including: 

• Inc. 5000 – 25th Fastest-Growing Private Company in America (2025). 

• Financial Times – #5 on “The Americas’ Fastest Growing Companies.” 

• EY Entrepreneur Of The Year® U.S. Overall. 

• South Florida Business Journal’s Top 100 Companies. 

• Florida Trend Magazine’s 500 Most Influential Business Leaders. 

• Inc. Best in Business, Health Services. 

Job summary

If you're an experienced addiction treatment therapist who cares about helping people get their lives back from addiction, we have the best place to practice your skills alongside the best support team. We're looking for a Clinician to provide individual, group, and family counseling to clients with substance use disorder and/or co-occurring mental health disorders. This position completes level-of-care assessments for new clients and works collaboratively with the treatment team to ensure the client’s treatment goals are being met.

What You’ll Do

Complete biopsychosocial assessments on incoming clients to determine appropriate level of care

Facilitate daily groups focused on substance use and mental health

Maintain open communication with all members of the treatment team

Provide individual counseling for all clients on your caseload

Facilitate family counseling sessions

Complete clinical documentation within 24 hours

Participate in team meetings (daily) and individual and group supervision (weekly)

Report to the Clinical Director for all emergencies and/or concerns

Complete SUD and mental health treatment plans and reviews for all clients

Participate in the family program we offer for clients

Submit concurrent reviews to the Utilization Department based on a schedule

• Master’s degree in Social Work, Counseling, Psychology, Addiction Studies, or a related behavioral health field.
• Current New Hampshire professional licensure, such as LADC/MLADC, LICSW, LCMHC, or comparable clinical behavioral health license.
• Demonstrated experience working with substance use disorders, co-occurring behavioral health conditions, and recovery-oriented treatment.
• Ability to establish professional, therapeutic relationships with clients while maintaining appropriate clinical boundaries.
• Strong clinical documentation, verbal, and written communication skills.
• Proficiency with electronic health records, basic computer applications, and data entry.