Zvi Weiss

PsyD · Director

Dr. Zvi Weiss is the founder and director of Weiss Psychology. He received his doctoral degree in clinical psychology from Long Island University, Post campus, and completed his clinical internship at Trinitas Regional Medical Center in Elizabeth, NJ. Following his graduate work, Dr. Weiss completed a post-doctoral fellowship in young adult mental health at the Counseling and Psychological Services center at Columbia University and received Sex and Couples Therapy Certification from the Sexual Health Alliance. In addition to his clinical training, Dr. Weiss received a master's degree in Education as well as rabbinic ordination at Yeshiva University. He integrates treatment modalities such as psychodynamic, cognitive behavioral, sex therapy, and dialectical behavioral (DBT) therapies to help adults struggling with identity, relationship, and sexual issues, as well as issues intersecting religious identity and psychological health.

Stewart Schweinfurth

LMSW

Stewart Schweinfurth earned bachelor's degrees from the University of Texas at Austin and a Master of Social Work from Columbia University. Stewart works with adolescents and adults experiencing anxiety, depression, ADHD, OCD, trauma, and challenges related to self-esteem, and particularly enjoys helping individuals navigate life transitions, relationship concerns, grief and loss, questions of identity, and the search for meaning and purpose. Drawing from cognitive behavioral therapy (CBT), dialectical behavior therapy (DBT), and a collaborative, insight-oriented approach, he helps clients identify unhelpful patterns, challenge deeply held beliefs, and develop more effective ways of relating to themselves and others — balancing thoughtful exploration of life's larger questions with concrete skills, grounded in curiosity, humor, compassion, and meaningful personal growth.

Amy Vargas

LMFT

Amy Vargas holds graduate degrees in clinical psychology from Hofstra University on Long Island, the Instituto Superior de Estudios Psicológicos in Valencia, Spain, and the Pontificia Universidad Católica Madre y Maestra in the Dominican Republic. She focuses clinically on helping patients regulate emotions, manage anxiety, and decrease depressive symptoms, and works to deepen patients' understanding of life crises, parenting patterns, and family dynamics in order to improve self-esteem and autonomy — helping individuals clarify goals and objectives in their lives.

Jacob Appel

LMSW

Jacob Appel is a social worker who provides a warm, collaborative, and nonjudgmental space where clients can explore challenges and work toward meaningful change. He earned his Master of Social Work from Touro University and has experience supporting individuals navigating trauma, domestic violence, anxiety, relationship concerns, identity exploration, and life transitions. Jacob previously worked with Jewish Queer Youth (JQY), supporting Jewish LGBTQ+ teens and young adults as they navigated identity, relationships, family dynamics, and the challenges of finding community and belonging. In addition to his work at Weiss Psychology, he currently works on the Family Violence Services Team at Met Council, supporting individuals and families impacted by domestic violence and helping clients access safety and resources. Prior to social work, Jacob worked as a publicist in the film industry, bringing a unique perspective on how people understand themselves, connect with others, and navigate major life changes. Drawing from trauma-informed, strengths-based, and person-centered approaches, he incorporates Cognitive Behavioral Therapy (CBT) and Internal Family Systems (IFS) to help clients gain insight, build on their existing strengths, and create lasting emotional well-being in a supportive, affirming environment.