

Welcome! I am a licensed mental health therapist with eight years of experience specializing in trauma, personality disorders—particularly narcissism—mood disorders, and relationship challenges. I am trained in EMDR, IFS, DBT, and CBT, though my primary approach is EMDR therapy. I also collaborate with a skilled nurse practitioner to offer integrated support, including ketamine-assisted therapy when appropriate. My goal is to provide a compassionate and personalized path toward healing and growth. I look forward to working with you!
Hello, and welcome! To start, I want you to know I provide a no-fee 15 minute initial consultation session for prospective clients, because I believe a good fit is essential to effective counseling. This first meeting should allow you to determine that. I am a seasoned therapist with experience across three decades of supporting individuals, families, and groups. The core of my success has always been my ability to help people to efficiently and effectively achieve their goals. I look forward to meeting you.
I graduated from the BIDMC/Harvard Psychiatry Residency Training Program in 2025.
I’m Dr. Olivier Barthelemy (“Dr. Ollie”), a licensed clinical psychologist who works with adults and adolescents facing challenges such as anxiety, obsessive-compulsive disorder (OCD), depression, trauma, and major life transitions. Many of the individuals I work with feel stuck in cycles of worry, self-doubt, or persistent thought patterns that are hard to break.
I strive to create a structured and compassionate space where we can make sense of these experiences, reduce distress, and develop practical tools for lasting change. My approach is also informed by a strong foundation in neuropsychology, shaped through training at Boston University's Center for Anxiety and Related Disorders (CARD) and the VA Boston Healthcare System.
This background deepens my understanding of how brain function and behavior interact, enriching both therapy and assessment. Drawing on both science and empathy, I’m committed to helping clients restore balance, strengthen resilience, and move forward with greater clarity and confidence.
Drawing from over three decades of experience in mental health, addiction counseling, and psychiatric rehabilitation, I offer specialized, personalized approaches for both individuals and couples. In couples counseling, our focus is on enhancing communication and fostering skills to reignite connections and reopen hearts. I approach our work with utmost respect, collaboration, and a deep appreciation for your unique journey. You are the expert in your own experience, I provide unwavering support, strategies and realistic optimism.
Counseling since 1987; (Masters, 1997). I understand on a deep level what it can be like to live with and overcome mental health challenges and to be impacted by and overcome an addiction; this experience enriches my empathy and informs my clinical practice and ability to connect and understand more fully with you. We are human beings, not a diagnosis.
Currently an Adjunct Instructor at Tufts University School of Medicine. As Senior Instructor at Cambridge College, I taught & supervised masters level mental health counselors. As an Instructor at UMass Boston, I taught future drug and alcohol counselors. We are full of potential. Let's remove the barriers to your good health, happiness and success together! (Physical office setting 226 Massachusetts Avenue, Suite 1B, Arlington, MA as well as Telehealth through Professional Zoom account that is HIPPA Compliant and Secure available if preferred.)
I am a licensed independent clinical social worker and Certified Clinical Trauma Professional (CCTP) specializing in trauma-informed care for adolescents and adults. I help individuals navigate anxiety, PTSD, complex trauma including sexual trauma, medical trauma and emotional regulation challenges.
I am passionate about supporting my clients to feel congruent internally, so they can further understand and communicate their needs externally. While talking is the most obvious way for communication, I also love to incorporate our somatic experiences during sessions (with your agreement, of course). As an immigrant from Taiwan, it's also my mission to provide my expertise for people struggling with "fit in", while transitioning to any new environments.
With a solid foundation in the field, I hold a Bachelor's degree in Clinical Psychology and a Master's degree in Clinical Mental Health Counseling. My career has been dedicated to working with diverse populations, introducing tools and techniques that are tailored to each individual's unique abilities and needs. I am confident in my ability to help you embark on a journey to a happier life.


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