Dear future client,

Hello!

I'm Mackenzie.

Reaching out can be so difficult. But I’m here to let you know that the healing has begun as soon as you start considering taking this step for yourself… Whenever you’re ready, I will be by your side every next step of the way.

I am so happy you're here! And I’m so excited for you to learn how possible it is for things to feel less hard, confusing, lonely. You deserve that! Contentment, clarity, connection.

My clients would probably describe me as warm, authentic, and approachable (I’ve even heard “funny” thrown around as a descriptor once or twice…). This is not your typical therapy that can feel impersonal or too clinical- I like to keep therapy easy-going, laid-back, flexible… a place that reflects you and whatever you’re needing. A place to exhale. Therapy with me is a welcoming safe space where you are totally encouraged to show up as you are (pajamas, snacks, cozy blankets, support pets also welcome!). I lead with this energy too: I’m usually found with a mug of tea and my dog cuddled in my lap during sessions, and it’s not uncommon to hear laughter interspersed with our deep healing work.

I feel incredibly lucky to get to do this work. It’s truly my dream job to get to know you, and to help you live the life you’re yearning for. It would be an honor to be part of this process with you- And I’m here whenever you’re ready!

I hope to meet you soon,

About Mackenzie Glassner, LPC, CCTP, CMIP

I’m here to help you rediscover the “you” you’ve been searching for.

I’m a Philadelphia-based Polyvagal therapist (click here to find out what this means) who specializes in the struggles embedded within our connectedness. This could be based in relationships with others (think familial ruptures, friendship struggles, and/or issues within romantic relationships), the relationship within ourselves (think self-esteem, lack of boundaries, people-pleasing, lack of identity), and our relationship to the world around us (think nervous system dysregulation and/or trauma reactions).

A simple line drawing of a sprig of grass with slender, pointed leaves against a black background.

How I work:

My work is built on the foundational belief that connection is the basis of healing.

Through building a therapeutic relationship based in trust, safety, and presence, we’ll gently explore what’s been holding you back, and begin moving toward deeper connection with yourself and others.

Therapy with me is…

  • I’ve been in your position: feeling frustrated, disconnected, and unable to truly believe that it can get better. I experienced firsthand how life-changing the “right fit” therapy can be. In my own healing journey, I discovered the power of combining somatic nervous system work with deeply relational support, and became inspired to foster the same growth in others as a therapist.

  • We’re here for lasting change, not a quick fix, and that requires you to honor your process. We give you the gift of patience, and we meet you where you are in your journey. We will focus on building safety and stability, one step at a time.

  • My work is resilience-focused and strengths-based, rooted in the core belief that your capacity for growth has unlimited potential. Together, we’ll collaborate to identify your goals and dreams for your therapeutic journey, and we’ll provide the steady presence and consistent work you need to make those goals and dreams your reality.

My Training & Education

    • University of Pennsylvania; M.Phil.Ed. in Professional Counseling

    • University of Pennsylvania; M.S.Ed. in Mental Health Counseling

    • Pennsylvania Licensed Professional Counselor (PC019368)

    • New Jersey Licensed Professional Counselor (37PC01232400)

    • Delaware Professional Counselor of Mental Health (MI-0000371)

    • Rhode Island Licensed Mental Health Counselor (MHC00339-A)

    • Brainspotting Phase 1 Training (2026)

    • Certified Clinical Trauma Professional (2025)

    • Certified Mindfulness-Informed Professional (2025)

    • Trauma-Informed Polyvagal Theory Certification Program (2025)

    • Integrative Trauma Training (2024)

    • Trauma-Informed Attachment Therapy Training (2024)

    • Shame-Informed Treatment Specialist Training (2024)

    • Mindfulness Intensive Training (2024)

    • Dialectical Behavior Therapy (DBT) Certification Training (2024)

    • Brainspotting Professional Community Member

    • Awarded title of Feldman Family Scholar, University of Pennsylvania

    • Awarded graduate research assistantship, University of Pennsylvania

    • Member of American Counseling Association

    • Member of Psi Chi International Psychology Honor Society

Professional Endorsements

“Mackenzie demonstrates a genuine commitment to warmth, empathy, and knowledge of evidence-based practices, which contribute to her ability to create a therapeutic space that feels both safe and transformative.”
— Alison Capaldi, LMHC-D
“It’s incredibly easy to feel comfortable with Mackenzie. She has a warmth and compassion that is admirable and contagious, and she is a very talented and knowledgeable therapist. For those looking to start therapy, you’ll be in great hands with Mackenzie!”
— Rachel Wolff, LCSW
“I have had the privilege of working alongside Mackenzie, and I can confidently say that she is an exceptional therapist. She is extremely knowledgeable, compassionate, and caring. She creates a safe and supportive space for clients.”
— Michon Dubbs, LPC
“Mackenzie is an exceptionally warm and responsive clinician who has a deep knowledge of somatic practice and nervous system support. Her passion for her work is evident, and her ability to create a safe space for healing is inspiring and truly special.”
— Cayetana Calderon-Smith, M.Phil.Ed.
“Mackenzie is an excellent therapist.”
— Susan Maroto, LCSW
“I appreciate Mackenzie’s holistic approach to treating trauma.”
— Jessica Pavelka, LPC/NCC
“I highly recommend Mackenzie as a therapist. Warm, empathetic, and trauma-informed, Mackenzie builds trust with ease, creating a safe space for clients to feel understood and supported.”
— Julia Rubens, Clinical Social Worker
“Mackenzie does amazing relational work, particularly with college students!”
— Jasmine Harlan, LAPC
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Get in touch

I’m here for all of it, whatever it is.

Reach out to me if you’d like to schedule a day and time for a free, confidential phone consultation. This will be a chance for you to share about yourself, to reflect on your hopes for your therapeutic experience, and to ask me any questions about the process. I’ll share with you about my therapeutic style, my clinical experience, and expectations for the start of the journey.

discover your inner anchor of Safe & Connected.

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discover your inner anchor of Safe & Connected. —