Sibelia L Chaiyahat, PsyD, LCSW
PsyD, LCSW CA #64865, OR #11339
Sibelia brings over 25 years of experience as a mental health therapist, supporting clients through depression, PTSD, life transitions, and more with compassion and dedication. Her background as a teacher, mindfulness practitioner, small business owner, and parent of three (including a child with disabilities) enriches her work. She married an immigrant and is 'Thai by Marriage', adopting Buddhist and Asian values and philosophy. She tailors treatment to her clients by using Cognitive Behavioral Therapy, Acceptance and Commitment Therapy, WET, Internal Family Systems, Animal-Assisted Therapy, Non Violent Communication, dream work and Jungian ideas, codependency work, Mindfulness, Music, Art, and Nature Therapy. Her approach integrates trauma-informed care, recovery principles, and mind-body integration, helping clients heal, grow, and live more fulfilling lives.
Sibelia holds a master’s degree in Social Work (MSW) and a doctorate in Psychology (PsyD). She is a Licensed Clinical Social Worker in California #64865 and Oregon #11339. She has been working in the field since 1999 and has practiced in three different states. She enjoys working with Older Adults, Veterans, and the LGBTQ Community. Sibelia uses a plethora of modalities listed above when treating clients but particularly enjoys using Canine Therapy, CBT, and EMDR (Eye Movement Desensitization or Written Exposure Therapy (WET). Sibelia has a Homestay in Thailand that she visits yearly, sometimes for extended periods of time. During her time in Thailand she will meet with clients on Telehealth in the evening. Dr Chaiyahat is the President of Pug Therapy, a nonprofit, 501(c)(3) corporation. Pug Therapy exists to provide canine therapy to folks in the community who may be isolated and without many treatment options.
Jason Peck, ACSW
Jason Peck, ACSW, is an Associate Clinical Social Worker with eight years of experience in behavioral health. Beginning his career as a Psychiatry Technician in the U.S. Navy, he developed expertise in mental health assessment, psychoeducation, and evidence-based interventions. Jason specializes in CBT-focused psychoeducation and works collaboratively with clients to build practical skills that support lasting mental wellness.
April Wenzel, BSW Intern
I’m April Wenzel, a Bachelor of Social Work intern currently completing my field placement at Willow Tree LCSW Inc.
As a social work student, I am developing a foundation in person-centered care, advocacy, and trauma-informed practice. My experience includes conducting biopsychosocial assessments, supporting clients through intake services, connecting individuals with community resources, and providing case management support. I have a special interest in supporting individuals experiencing anxiety, depression, life transitions, family challenges, and those seeking guidance in accessing community resources and services. I believe everyone deserves to feel empowered and supported on their journey toward healing and growth.
Outside of my professional work, I enjoy exploring national parks with my family, spending time in nature, and creating handcrafted candles. Whether I’m discovering a new trail or working on a creative project, I value opportunities to slow down and be present.
Rose Sosa, APCC
I am an Associate Professional Clinical Counselor (APCC) graduate of Grand Canyon University and a retired Army National Guard soldier. My clinical approach is trauma-informed, veteran-focused, and grounded in collaboration, empathy, and respect. I believe healing is most effective when it is a shared journey between client and counselor, honoring each individual’s lived experiences and strengths. Yo hablo espanol.
I bring experience working with residential and crisis populations, supporting individuals through complex and high-acuity challenges. My clinical interests include PTSD recovery, reducing symptoms of anxiety and depression, and addressing interpersonal conflict. I am especially passionate about supporting veterans and individuals impacted by trauma, helping them build resilience, restore a sense of safety, and move toward meaningful change.
Born and raised in San Diego, California, I am proud of my Mexican and Guatemalan heritage, which informs my culturally responsive and holistic approach to care. Outside of my professional work, I enjoy spending time with my family and exploring new foods, experiences that help keep me grounded and connected.
Office Space is available to rent for Therapists getting started.
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