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Your Trusted Mental Health Provider in Portland, OR
Quimson Behavioral Health is a dedicated mental health practice serving patients across Oregon through both in-person and tele-health services. Established with a commitment to holistic care, our Portland-based office in Bethany Village offers accessible support for individuals seeking treatment for a wide range of mental health disorders. Our team includes board-certified psychiatrist Dr. Pia Quimson-Guevarra and certified physician assistant Cayley Mesterheide, who employ a balanced approach combining medication management, evidence-based therapies, and patient education. Specializing in conditions such as anxiety, depression, ADHD, and bipolar disorder, we prioritize personalized care that addresses both biological and psychosocial factors. Our practice emphasizes creating a supportive environment for emotional growth, utilizing therapeutic modalities like Cognitive Behavioral Therapy and Compassion-Focused Therapy.With expertise in forensic psychiatry and a focus on cultural competence, we serve diverse populations while maintaining strict adherence to medical ethics and professional standards. Our operational history reflects years of dedicated service in psychiatric care, with providers holding credentials from respected institutions like Oregon Health and Science University and Lipscomb University. We maintain transparency in our billing practices, offer flexible scheduling through secure patient portals, and ensure compliance with healthcare regulations to provide trustworthy, patient-centered care.
Services
Adult Mental Health Services
Tele-health Consultations
Psychiatric Evaluations
Medication Management
Cognitive Behavioral Therapy
Forensic Psychiatry Services
ADHD Treatment
Depression Counseling
Anxiety Disorder Treatment
Bipolar Disorder Management
Highlights and features
- Board-certified psychiatrists with forensic psychiatry expertise
- Holistic treatment combining medication, therapy, and education
- Tele-health services available across Oregon
- Proximity to Beaverton and Hillsboro communities
- Specialized therapies including CBT and Compassion-Focused Therapy
Associations and certifications
- American Board of Psychiatric and Neurology
Services
Adult Mental Health Services
Comprehensive treatment for adults with mental health disorders including anxiety, depression, and bipolar disorder. Our board-certified providers combine medication management with evidence-based therapies to address individual needs. Services emphasize long-term wellness through personalized treatment plans.
Tele-health Consultations
Secure online mental health services available throughout Oregon. Patients receive the same quality care through virtual appointments for diagnosis, medication management, and therapy sessions. This option provides flexibility while maintaining treatment continuity.
Psychiatric Evaluations
Thorough diagnostic evaluations conducted by experienced professionals. We assess symptoms, medical history, and psychosocial factors to develop accurate diagnoses. This process informs customized treatment strategies for optimal patient outcomes.
Forensic Psychiatry Services
Expert psychiatric evaluations for legal cases. Our board-certified forensic psychiatrist provides court testimony, case analysis, and written reports. Services include competency assessments and expert witness testimony for attorneys and legal professionals.
Cognitive Behavioral Therapy
Structured psychotherapy focusing on identifying and modifying negative thought patterns. Our therapists use CBT to treat anxiety, depression, and other conditions by developing practical coping strategies. Sessions emphasize skill-building for long-term mental wellness.
People
Pia Quimson-Guevarra
Board-Certified Psychiatrist
Dr. Quimson-Guevarra specializes in psychiatry and forensic psychiatry. She graduated from Western University of Health Sciences in 2013 and completed residency at Oregon Health and Science University. She provides comprehensive mental health care using evidence-based approaches.
Cayley Mesterheide
Certified Physician Assistant
Cayley Mesterheide PA-C specializes in psychiatric care with experience treating diverse patient populations. She earned her Master's in PA Studies from Lipscomb University and focuses on holistic treatment combining medication management with supportive therapy.
Questions
What mental health services do you offer?
We provide psychiatric evaluations, medication management, and therapy for conditions like anxiety, depression, ADHD, and bipolar disorder. Our services include both in-person and tele-health appointments.
Do you accept insurance?
We accept Blue Cross/Blue Shield, Regence, Moda, Providence, First Health Network, Pacific Source, and Cigna. We also offer self-pay options with superbills for out-of-network reimbursement.
How can I schedule an appointment?
Call us at 503.832.9293 to leave a voicemail with your insurance information. New patients are placed on a waitlist and contacted for intake screening when openings occur.
What if I need emergency help?
For mental health emergencies, contact 911, a crisis line, or visit the nearest emergency room. We do not provide crisis services but maintain local resource referrals.
Do you offer tele-health options?
Yes, we provide tele-health services throughout Oregon. Virtual appointments are available for evaluations, medication management, and therapy sessions using secure communication platforms.
What therapeutic approaches do you use?
Our providers utilize Cognitive Behavioral Therapy, Acceptance and Commitment Therapy, Compassion-Focused Therapy, and Psychodynamic approaches tailored to individual patient needs and treatment goals.
