Prenatal and postpartum therapists & psychiatrists in Lexington, MA

Welcome. My goal is to provide support, guidance, and encouragement in helping you to recognize what you already know about yourself...you willingness to try. In this world, with so many changes and stressors, it can be a good starting point.

My focus is in anxiety, life transitions, grief, and depression.

I am a dual Board Certified Family & Psychiatric Mental Health Nurse Practitioner with fifteen years of experience treating adults and adolescents. I provide medication management for ages 13-55 for the treatment of Anxiety, Depression, OCD, PTSD, Bipolar Disorder and ADHD. I am particularly interested in working with adolescents, young adults & new parents. I also have a medical background in women's health and use that information in assessing and treating women across the lifespan.

I am a Licensed Independent Clinical Social Worker. There are credentials I could list and ways for you to assess why I am the right clinician for you, and while those things matter, what I find most true is this: I care deeply about this work.

Finding the right therapist is hard, and on behalf of all therapists, I'm sorry this is true. I won't promise a "safe space" for the people I work with, but I can promise an accountable one. I am committed to learning alongside you, knowing that we will teach each other what comes next. I will create the container for our work, and together, I hope to build a foundation of trust that allows you to heal, grow, challenge, accept, and integrate all that has brought you here.

Many people who come to see me are living with depression, overwhelmed with anxiety, or are processing and healing from past trauma. You might be going through a major life transition or find your usual ways of coping are no longer working. You might feel stuck, uncertain, and disconnected from yourself. Investing in therapy can be difficult when there are so many other things that demand your attention. My role is to help you explore what is important to you, what is getting in the way, and make realistic, actionable steps towards your goals.

Disclaimer: My current role as an Access Clinician at Harvard University Health Services allows me to work with folx from all walks of life. I hold a small caseload in my private practice to focus on my clinical interests. Due to my role, I do not see any actively enrolled Harvard students in my private practice. However, this means you can see me at CAMHS for short-term counseling.

Hannah Thiessen specializes in trauma-informed care and EMDR. She brings a holistic, body-mind approach to therapy, combining traditional talk therapy with EMDR to help clients process trauma.

You may be feeling overwhelmed, emotionally exhausted, or stuck in patterns that no longer feel aligned with who you are. Many of my clients are insightful, sensitive, and capable, yet struggle with anxiety, depression, trauma, attachment wounds, ADHD, or relationship challenges. You may be used to caring for others, masking your needs, or pushing through instead of feeling supported. You’re looking for therapy that feels safe, real, and validating — not judgmental or distant — and you want to better understand yourself, your emotions, and your relationships.

I offer relational, trauma-informed therapy grounded in attachment-based and emotionally focused approaches. I work collaboratively to help clients understand emotional and relational patterns, regulate their nervous systems, and build self-trust and healthier connections. My practice is affirming of neurodivergent and LGBTQ+ identities.

Therapy doesn’t have to feel cold or clinical. I offer a supportive, honest, and affirming space where you don’t have to mask or explain yourself. Whether you’re navigating trauma, relationships, identity, or emotional overwhelm, you deserve therapy that feels human, safe, and respectful of who you are.

I am a Psychiatric Nurse Practitioner treating clients since 2016 and prior to that, providing family practice care in a rural University clinic.

I am an HBCU educated single mother of twins who is passionate about the work I do. I approach our sessions as your time to work through what you are ready to tackle in your life. I will follow your lead, while gently challenging you when necessary in order to help you reach the goals you have set for yourself. If you would like a faith-based approach, I can offer that as well.