Matthew Garthwait, LCSW

Licensed in New Hampshire · 22 years in practice

Matthew Garthwait is a licensed clinical social worker in New Hampshire with 22 years of experience supporting people through stress, anxiety, addictions, grief, and life changes.

License and registration

LCSW, New Hampshire: 2399 · expires October 2026
NPI: 1578929337 · national provider identifier
Years in practice: 22
Languages: English

Details are as listed on the therapist's public professional profile. You can check any license with the state board and any NPI with the national registry.

About Matthew

Matthew Garthwait is a licensed clinical social worker in New Hampshire with 22 years of experience supporting people through stress, anxiety, addictions, grief, and life changes. He focuses on practical steps that help someone feel steadier and more able to manage daily challenges. He treats issues like low self-esteem, panic attacks, and social anxiety in straightforward, down-to-earth language.

He helps people who are dealing with drug and alcohol addiction and process addictions such as gambling, exercise, or pornography.

Background and approach

He also supports those working through fatherhood concerns, smoking or vaping cessation, impulsivity, and feelings of isolation or loneliness. Sessions emphasize small, achievable goals that fit into everyday life. Matthew approaches therapy by treating the person as the expert on their own story.

He listens for strengths and uses them as the foundation for change. He encourages practical experiments between sessions so new habits can form and confidence can grow. His style is collaborative and compassionate.

He offers steady presence while helping clients set realistic steps toward recovery or clearer purpose. People meet him for help with motivation, coping after loss, and building more satisfaction in life. Matthew works with English-speaking clients in New Hampshire and provides therapy through several online formats.

To begin, a short matching questionnaire helps pair someone with the right therapist and schedule.

Focus areas and approaches

Everything Matthew lists on their public professional profile, in their own terms.

Stress, Anxiety
Addictions
Grief
Self esteem
Coping with life changes
Drug and alcohol addiction
Fatherhood issues
Impulsivity
Isolation / loneliness
Life purpose
Men's issues
Panic disorder and panic attacks
Process addiction (porn, exercise, gambling)
Smoking / vaping cessation
Social anxiety and phobia

Online support

How evidence-based techniques translate to online care

Matthew uses evidence-based techniques that focus on real-world change. One common approach is behavioral work that breaks problems into small, manageable steps and builds new habits over time; this helps with panic attacks, impulsivity, and smoking or vaping cessation. Another approach emphasizes coping skills for anxiety and cravings, teaching concrete tools to lower distress and handle urges as they arise.

Choosing the right approach is a joint process. Matthew listens to each person's goals, life situation, and preferences, then suggests methods that fit. Clients and therapist check in together and adjust the plan as progress and needs change.

Online therapy offers flexible ways to connect. Video calls allow face-to-face conversation for deeper discussions. Phone sessions can be simpler when bandwidth is limited or a shorter check-in is needed. Live chat and text-based messaging give quick access for brief updates, homework support, or when scheduling is tight. These options help people fit therapy into work, family life, or busy days while keeping focus on practical steps and recovery.

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Questions people ask

What kinds of concerns does Matthew focus on?

He works with stress, anxiety, addictions, grief, self-esteem, and coping with life changes. Additional focus areas include panic attacks, social anxiety, and fatherhood issues.

What is his general therapy style?

His approach is collaborative and practical, emphasizing small, realistic steps and using a client's strengths to guide change. He keeps language simple and actionable.

How much clinical experience does he have?

He has 22 years of professional experience working with people on issues such as addictions, grief, anxiety, and life transitions.

Where is he licensed and based?

Matthew is licensed as an LCSW in New Hampshire and practices with that credential in the state.

Can sessions be in languages other than English?

Sessions are offered in English.

Which session formats are offered?

He provides video calls, phone sessions, live chat, and text-based messaging to fit different schedules and needs.

How are costs and billing handled?

Cost varies with location and therapist availability and sessions are provided through a subscription model that can be canceled at any time.

What are the first steps to begin therapy?

Start by selecting the Start Therapy button, complete a short matching questionnaire, and then schedule sessions according to the therapist's availability.

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