Dr. Pia Quimson-Guevarra, DO

Dr. Quimson-Guevarra is a board-certified psychiatrist (DO) and founder of Quimson Behavioral Health, LLC, providing compassionate, culturally sensitive adult mental health treatment across Oregon and Washington. As a Filipina-American, BIPOC/AAPI provider with fellowship training in forensic psychiatry from Oregon Health & Science University (OHSU) and a medical degree from Western University of Health Sciences, Dr. Quimson-Guevarra moves beyond brief medication check-ins to deliver deeply personalized care. The practice offers an inclusive, affirming space for neurodivergent individuals, BIPOC adults, and the LGBTQ+ community, blending rigorous clinical expertise with genuine human warmth.

To foster lasting healing and emotional balance for adults ages 18–65, treatment integrates evidence-based medication management, patient education, and tailored psychotherapy frameworks like Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), and psychodynamic …approaches. Key clinical highlights and practice specialties include:

• Culturally Responsive Psychiatry: Empowering BIPOC, AAPI, and LGBTQ+ adults as they navigate complex personal, familial, workplace, and geopolitical dynamics.
• Neurodivergent-Affirming Care: Specialized evaluation and management for adult ADHD, anxiety disorders, panic attacks, OCD, and major depression.
• Whole-Person Practice Model: Thoughtful medication management paired with selective talk therapy to address root causes rather than isolated symptoms.
• Complex Adult Conditions: Comprehensive psychiatric treatment for Bipolar Disorder, Schizoaffective Disorder, and Schizophrenia.

Based in Bethany Village on the westside of Portland—conveniently serving Beaverton and Hillsboro—Quimson Behavioral Health combines flexible virtual telehealth appointments throughout Oregon and Washington with dedicated monthly in-person clinic days. 

Request an appointment now to experience next-level care!