Therapy in Portland, Oregon Siera Leon-Guerrero, Therapy Clinician

Siera Leon-Guerrero helps teens, adults, and families develop practical tools for navigating emotional challenges, strengthening relationships, and building resilience. Through LifeStance Health, she serves patients across Oregon, providing compassionate, individualized mental health care in a supportive and collaborative setting. Siera works with individuals facing concerns such as anxiety, depression, and trauma, helping them gain insight, develop effective coping strategies, and move toward meaningful personal growth. Siera is particularly passionate about supporting individuals experiencing anxiety, trauma-related concerns, and depression. She recognizes that these challenges can affect every aspect of life, from school and work performance to relationships and self-confidence. By creating a safe and affirming therapeutic environment, she helps patients explore their experiences, identify strengths, and develop skills that promote lasting emotional well-being. She also provides care for additional mental health concerns and life challenges. Her therapeutic approach is grounded in evidence-based practices, including Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and mindfulness-based interventions. Siera values meeting each patient where they are and tailoring treatment to their unique needs, goals, and life circumstances. She provides individual, family, and group therapy services and has experience supporting diverse populations, including members of the LGBTQ+ community, individuals with autism spectrum disorders, and those involved in adoption or foster care experiences.

Siera works with both adolescents and adults, including teens navigating school, social, and developmental challenges. She understands the impact that stress, grief, neurodivergence, medical conditions, and life transitions can have on daily functioning and emotional health. Her approach emphasizes collaboration, authenticity, and building practical skills that help patients feel empowered in their everyday lives. Outside of her clinical work, Siera enjoys board games, tabletop role-playing games, fantasy novels, and karaoke. These interests reflect her appreciation for creativity, connection, storytelling, and community, values that also inform the way she engages with patients in therapy.

Siera Leon-Guerrero provides services with supervision.