Mateo Leonardo


Mateo Leonardo AMFT

Mateo Leonardo (He/Him)

Associate Marriage and Family Therapist

Associate Sex Addiction Therapist


Are you feeling overwhelmed and not in control? Are you concerned your compulsive behavior is stopping you from achieving your goals? Are you struggling with feelings of depression or anxiety?

As a registered Associate Marriage and family therapist specializing in addiction, I understand addictive behavior goes beyond substance use. I am trained to use cognitive behavioral therapy (CBT) and dialectical behavioral therapy (DBT) to help individuals understand and control urges and their triggers. I’ll help you become more aware of the thoughts and feelings they have been trying to avoid with addictive behaviors. I’ll help you gain awareness and better understand maladaptive thoughts, behaviors, and core beliefs. I help individuals become more aware of the thoughts and feelings they have been trying to avoid.

I know everyone faces different challenges, and I strive to adjust my therapeutic style to help each individual better. I provide a safe, supportive, non-judgmental environment where you can begin the healing and recovery process together. 


Areas I specialize in:

  • Sex and Porn Addiction
  • Anxiety, Stress, and Overwhelm
  • Depression, Low Mood, Lack of Joy
  • Partner-Relational Issues like communication, intimacy, and connection
  • Overwhelming Emotions and Thoughts
  • Men’s Issues
  • Grief and Loss
  • Chronic Illness
  • Trauma

My purpose is to empower individuals so they can improve their personal and interpersonal well-being in day-to-day life.

Education & Training

  • Master of Arts in Clinical Psychology, Antioch University
  • Bachelor of Arts in Sociology, Cal State Long Beach
  • Supervised by Duane Osterlind, LMFT, CSAT-S (MFT #44567)
When Will I Get Better?
Therapy is often a long-term commitment. It is a commitment you make to yourself. Your involvement and dedication to the process is crucial. As is my approach to making this a safe and comfortable environment for you while introducing techniques and interventions to use towards your struggles. Let’s take a moment to focus on the fact that you are here and how proud it makes you.
What will therapy be like?

As your therapist, I will collaborate with you by observing, assessing and determining what will best help you and fits your needs. Through building a stable relationship and the creation of a safe and comfortable environment, I will introduce techniques and interventions that can help you through your struggles.

How often should I come?
In most cases, we will start out with once a week and increase if appropriate. Every few months we will re-evaluate to determine if a decreased frequency is necessary.
Long BEach Therapist Mateo Leonardo

Call Us Today!

We are here to work with you and provide a level of commitment that no one else can. Let us help start or further your healing today so you have the strength to get through this tough time in your life.