Psychologist in Boston, Massachusetts Thomas Guyer, Psychologist

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.