About
Accepting new Clients. With over 20 years of experience, I have seen many people overcome challenges and regain hope. I work with individuals aged 18 through older adulthood on a variety of issues, including those struggling with anxiety, depression, stress management, or life transitions. Common challenges are feeling emotionally overwhelmed, suddenly overly anxious or angry, experiencing intrusive thoughts, struggles with substance or porn use, withdrawal from responsibilities without the tools to manage these experiences. Having strong, healthy coping skills can help you feel back in control of managing life again. I am passionate about helping people find solutions to help them manage anxiety, depression, and stress in healthy ways. I also have expertise in substance use and addiction counseling for alcohol, marijuana, and opiates. I can provide substance abuse evaluations for the courts, employers, or school systems. I use evidenced based, client centered approaches drawing on cognitive behavioral and motivational models. In counseling, clients develop the tools to challenge unhealthy thinking patterns, regulate their emotions, manage stress and increase confidence.
"I use evidence-based treatment to help you create lasting change in your life. Our approach will look like conversations, building tools and skills for you to use in your daily life."
I work with

Age groups



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Specialties
Areas of Focus
Therapeutic Approaches
Services & Pricing
Individual Therapy
50 min · Online, In Person
Sliding scale available.
Qualifications
Verified by Calm at Home
Licensed · MSW, LICSW, MLADC
Matthew Garthwait · Verified February 2026
Education and Years in Practice
Attended University Of New Hampshire, MSW in , Graduated 2003
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My Practice at a Glance
Available both in-person and online
Rye, NH, 03870 map
I use evidence-based treatment to help you create lasting change in your life. Our approach will look like conversations, building tools and skills for you to use in your daily life.
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Based on standard psychological tests
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Anxiety Test
GAD-7 · 7 Questions
Depression Test
PHQ-9 · 9 Questions
Stress Level
PSS-10 · 10 Questions