Birch Tree Psychology is a leading group practice offering high-quality, evidence-based therapy for children, teens, and adults. Based in Pompton Plains, New Jersey, the practice was co-founded by Dr. Brittany Ryan-Berzins and Dr. Peter Berzins—two clinical psychologists committed to providing care that is as compassionate as it is effective.
What began as a practice specializing in anxiety and depression in children and adolescents has grown into a multidisciplinary team treating a broad range of mental health concerns, including OCD, trauma, treatment-resistant depression, sports performance issues, and relationship challenges. Whether you’re seeking support for yourself, your child, or your family, Birch Tree Psychology provides targeted, expert care tailored to your needs.
A personalized approach to therapy
No two clients are alike, and neither is their therapy. At Birch Tree Psychology, therapy is never one-size-fits-all. Every treatment plan is built around the individual’s goals, personality, and developmental stage. Our therapists use a wide range of empirically supported modalities, such as:
- Cognitive Behavioral Therapy (CBT)
- Dialectical Behavior Therapy (DBT)
- Acceptance and Commitment Therapy (ACT)
- Exposure and Response Prevention (ERP)
- Psychodynamic TherapyTrauma-Focused Therapy
- Mindfulness-Based Cognitive Therapy (MBCT)
- Play Therapy and Art Therapy
- Strength-Based and Compassion-Focused approaches
- Gottman Method (for couples)
We prioritize matching each client with the therapist best suited to their needs—whether that’s a therapist skilled in working with shy children, angry teens, overwhelmed parents, or high-achieving adults silently struggling.
Specialized services
Birch Tree Psychology is known for its results-driven, client-centered approach. The practice is especially successful in supporting:
- At-risk teens
- College students dealing with anxiety, stress, or lack of direction
- Women and couples facing fertility challenges, postpartum depression, or trauma
- Parents in need of coaching and strategies to manage behavioral issues
- Adults struggling with depression, anxiety, OCD, or life transitions
Our team also offers continuity of care for college students, allowing them to continue therapy seamlessly whether they are at home or on campus. Dr. Peter Berzins also brings extensive expertise in sports psychology, helping athletes—from students to professionals—enhance their mental performance on and off the field.
Group therapy and parent coaching
In addition to individual therapy, Birch Tree Psychology offers two DBT skills groups—one for teens and one for young adults—focused on helping participants develop emotional regulation, mindfulness, and interpersonal skills.
We also provide expert parent coaching for families navigating behavioral challenges in school-age children. Our goal is always to empower clients and families with the insight and tools they need to make lasting, positive change.
Meet our team
Our team of highly trained clinicians brings a range of specialties and therapeutic styles to the practice, united by a shared commitment to clinical excellence and compassionate care.

Dr. Brittany Ryan-Berzins
Brittany Ryan-Berzins, Ph.D. is a Licensed Clinical Psychologist (# 4961) in NJ

Dr. Peter Berzins
Peter Berzins, Ph.D. is a licensed clinical psychologist (# 4806) in NJ and NY

Andrea Korn, LCSW
Andrea Korn, LCSW is a Licensed Clinical Social Worker (NJ44SC06612600) with over 10 years of experience working with

Randi-Jo Farrell, LCSW
Randi-Jo Farrell, LCSW is a Licensed Clinical Social Worker (#44SC05908800)

Brian Wilson, LPC
Brian Wilson is a Licensed Professional Counselor (37PC00756500) who earned a Master of Arts from William Paterson University

Zoe Malkin, LCSW
Zoe Malkin is a Licensed Clinical Social Worker in New Jersey (#44SC06067100) and New York (#092300-01)

Hayley Lynch, LCSW
Hayley Lynch, LCSW is a Licensed Clinical Social Worker (44SC06112500)

Katalin Vinczi-Sierra, LCSW
Katalin Vinczi-Sierra is a Licensed Clinical Social Worker in NJ (# 44SC06141600) and FL (#SW20245)

