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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, 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.


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Nicole joined our Team in April 2025 as the Office Manager. She is also a Certified Peer Specialist and currently learning about billing, as well as, the business of mental health. Nicole understands mental health issues and will be a team player in your journey with Willow Tree.

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