Dr. Thomas Guyer, PsyD, Boston, MA | Psychologist

About Dr. Thomas Guyer

Focus areas

Addiction / Substance Abuse

Bipolar Disorder

Midlife Transition

Anxiety

Depression

Schizophrenia

Attention-Deficit / Hyperactivity Disorder (ADHD)

Life Transition

Clientele seen

Young adults (18-24)

Adults (25-64)

Individuals

Identity

Gender

Male

Languages spoken

English

Getting to know Dr. Thomas Guyer

Thomas Guyer helps adults across Massachusetts gain clarity and direction through comprehensive psychological and neuropsychological testing. As a Psychologist at LifeStance Health, he provides in-depth evaluations that help identify underlying concerns, guide accurate diagnosis, and inform effective treatment planning for a range of mental health and cognitive conditions. Dr. Guyer specializes in ADHD, anxiety, and depression, and also evaluates concerns related to bipolar disorder, substance use, and major mental health conditions. His approach to testing is thorough and collaborative, integrating clinical interviews, standardized assessments, and personalized feedback to ensure patients leave with a clear understanding of their strengths and challenges. He offers both psychological testing and neuropsychological testing, and provides additional areas of assessment based on individual needs. He works with adults across various life stages, including young adults and those navigating midlife transitions. Dr. Guyer understands that seeking answers can feel overwhelming, and he strives to create a supportive, respectful environment where patients feel comfortable throughout the evaluation process. His goal is to provide meaningful insights that support better functioning in daily life, work, and relationships. Outside of his clinical work, Dr. Guyer enjoys reading, playing the piano, and staying active through hiking, skiing, and sailing with friends. These activities help him maintain balance and bring a thoughtful, grounded perspective to his work. Thomas Guyer provides psychological and neuropsychological testing services for adults throughout Massachusetts with a focus on accuracy, clarity, and individualized care.

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Popular visit reasons

Addiction Follow Up

Agoraphobia

Anxiety Disorder

Depression

New Patient Visit

Psychotherapy

Psychotherapy Intake / Initial Visit

Therapy

Addiction Follow Up

Agoraphobia

Anxiety Disorder

Depression

Office location

Dr. Thomas Guyer, PsyD also offers online video visits for patients

LifeStance Health - Massachusetts

185 Devonshire St, Boston, MA 02110

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Education and background

Practice names

LifeStance Health - Massachusetts

Education and training

The Wright Institute, PsyD in Clinical Psychology

NPI number

1316311053

Patient reviews

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Frequently asked questions

How soon can I make an appointment with Dr. Thomas Guyer?

Generally, Dr. Thomas Guyer has appointments available on Zocdoc within 1 week. You can see Dr. Guyer's earliest availability on Zocdoc and make an appointment online.

Is Dr. Thomas Guyer accepting new patients?

Dr. Thomas Guyer generally accepts new patients on Zocdoc. You can see Dr. Guyer's earliest availability on Zocdoc and schedule an appointment online.

Does Dr. Thomas Guyer accept my insurance?

Choose your insurance plan to verify if Dr. Guyer is in-network.

Can I make an appointment with Dr. Thomas Guyer online?

Yes, you can make an appointment online with Dr. Guyer using Zocdoc. It’s simple, secure, and free.

What practice does Dr. Thomas Guyer work with?

Dr. Thomas Guyer works with LifeStance Health - Massachusetts.

Where is Dr. Thomas Guyer's office located?

Dr. Thomas Guyer has 2 office locations in Boston, view full addresses on Dr. Guyer's profile.

What are common reasons for patients to see Dr. Thomas Guyer?

Dr. Thomas Guyer frequently sees patients for Depression, New Patient Visit, Psychotherapy, Psychotherapy Intake / Initial Visit, and Therapy. You can see other visit reasons for Dr. Thomas Guyer on their profile.