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Siera Leon-Guerrero, Therapy Clinician

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

Specialties:
Social skills & communication +39
Ages Served
11-64
Manages Medications
No, provides therapy only
Accepts Insurance

About Siera Leon-Guerrero (She/Her)

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.

Types of Care & Ages Served

Areas of Focus

Individual Therapy

Get help addressing challenges and improve well-being with a clinician's guidance.

  • Social skills & communication
  • Adoption & foster care
  • Anger issues
  • Anxiety
  • Attachment issues
  • Autism: generally independent
  • Autism: requires some assistance
  • Autism: requires substantial support
  • Bullying or harassment
  • Caregiving
  • Childhood behavioral issues
  • Depression/feeling down
  • Family conflict
  • Focus, concentration & memory
  • Gambling
  • General relationship issues
  • Intellectual challenges: generally independent
  • Intellectual challenges: requires some assistance
  • Intellectual challenges: requires substantial support
  • Learning challenges
  • LGBTQ+
  • Marital stress or divorce
  • Menopause & perimenopause
  • Other addictive behaviors
  • Other women's health concerns
  • Panic attacks
  • Parenting
  • PMS & PMDD
  • Pornography/sexual behaviors
  • Premarital counseling
  • School avoidance
  • School behavioral issues
  • Self-esteem
  • Self-injury or cutting
  • Sexual trauma
  • Stress from ongoing health issues
  • Stress management
  • Trauma & PTSD
  • Unhealthy eating habits
  • Video game/internet

Languages

  • American Sign Language
  • English

Education

  • Utah Valley University
  • Sierra College
  • Portland State University

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Frequently Asked Questions About Siera Leon-Guerrero

Please use our online form to schedule an appointment with Siera Leon-Guerrero. You can also call 503-563-3420 to have someone assist you.

Siera Leon-Guerrero, Therapy in Portland, Oregon

Siera Leon-Guerrero

Therapy in Portland, Oregon

New patient?

Check availability and book your first appointment View Availability

Already have an appointment?

Video visit waiting room Join Now
Existing patient portal Sign in