John Tzanos (He/Him)

Ph.D
Accepting Clients

I help adults with OCD, ADHD, anxiety, depression, trauma, insomnia, BFRBs, and relationship stress using practical therapy.

Psychologist in Castle Rock, CO

About My Clients

My clients are adults and couples who look capable on the outside but feel stuck underneath. They may be dealing with anxiety, OCD, intrusive thoughts, ADHD overwhelm, depression, insomnia, trauma, stress, body-focused repetitive behaviors, or relationship struggles. I work best with thoughtful people who want therapy that is practical, collaborative, and evidence-based, while still making room for difficult emotions and deeper self-understanding.

My Background and Approach

My approach is warm, direct, collaborative, and grounded in evidence-based care. I help clients understand the patterns that keep them stuck and then translate that understanding into concrete changes they can practice in daily life. Depending on your needs, I draw from ACT, CBT, ERP for OCD, CBT-I for insomnia, EFT for couples, and clinical hypnosis when appropriate. I work with anxiety, OCD, ADHD-related difficulties, depression, insomnia, trauma responses, stress, relationship struggles, and body-focused repetitive behaviors. My goal is not insight alone, but helping you build psychological flexibility, self-trust, steadier coping, and a clearer ability to act in line with what matters. I am a licensed psychologist with training in evidence-based treatment for OCD, anxiety, ADHD, insomnia, trauma-related concerns, and clinical hypnosis. I aim to keep therapy rigorous, personal, and adapted to you rather than delivered as a rigid protocol.

My Personal Beliefs and Interests

Outside of therapy, I value learning, depth, honesty, humor, and thoughtful conversation. I am drawn to psychology, neuroscience, philosophy, culture, and the question of how people build lives that feel grounded and meaningful. Those interests shape the way I practice: with curiosity, respect, and attention to both practical change and the larger questions people bring into therapy. I care about creating a practice that is welcoming to people from different backgrounds, cultures, identities, and belief systems. I do not expect clients to fit one narrow definition of a healthy or successful life. I respect people who are trying to understand themselves more honestly, live with more intention, and make choices that align with their own values. I also believe therapy should feel human. Growth can be serious work, but it does not need to feel cold or performative. A good therapy relationship should allow room for honesty, humility, complexity, and even humor.

Insurance Plans Accepted
  • Out of Network
  • Aetna
I offer online counseling in the following states:
I have experience with the following
  • Agnosticism
  • Atheism
  • Buddhism
  • Christianity
  • Taoism

At A Glance

  • Experience: 7 years of practice
  • Languages: English, Greek
  • Rate: $205 - 250/session

Reach out to John