About
Pia Guimson-Guevarra, DO

Forensic Psychiatrist Medicolegal Consultant
Dr. Quimson-Guevarra is a Board-Certified Psychiatrist and Forensic Psychiatrist based in Portland.
She serves as a medical-legal case consultant to attorneys, expert witness, and psychiatric medicolegal evaluator.Â
Clinical Psychiatry
Quimson Behavioral Health, Dr. Quimson-Guevarra’s clinical practice serves patients in the Portland Metropolitan Area.
Details of Dr. Quimson-Guevarra’s Board-Certifications, training, credentials, media, and publications are available below and in the downloadable CV.
Licenses & Certifications
Oregon Medical License, #DO179697
Board Certification in Psychiatry, American Board of Psychiatry and Neurology, #73318
Board Certification in Forensic Psychiatry, American Board of Psychiatry and Neurology, #2495
Oregon Forensic Evaluator Certificate
Clinical and Forensic Practice
Quimson Behavioral Health (2019-Present)
- Private practice, psychiatric outpatient care. Visit QBH website.
- Clinical Psychiatry
- Therapy
- Medication management
Adult and Forensic Psychiatry, Private Practice (2019- Present)
Cascadia Behavioral Health, Adult and Forensic Psychiatrist (2017-Dec 2021)
- Outpatient psychiatric care to patients in the forensic assertive community treatment (FACT) program.
- Outpatient psychiatric care at an urgent-care walk-in clinic
Columbia Care, Outpatient Psychiatrist
- Telemedicine and in-person outpatient psychiatric care; settings included community clinics and supported housing (2017-2018)
Forensic Psychiatry Experience and Education
Forensic Psychiatry Fellowship, Oregon Health and Science University (2018-2019)
Emphasis:Â Law and the Legal Process, Criminal Forensic Psychiatry, Civil Forensic Psychiatry, Special Issues in Forensic Psychiatry, Landmark Cases.
There are approximately 50 Forensic Psychiatry Fellowships in the United States, accommodating 2-4 competitive spots to Psychiatrists. Dr. Quimson-Guevarra was accepted into the OHSU Fellowship, which is highly regarded and the only such program in the Pacific Northwest.
- Washington County Jail, Multnomah County Detention Center, and Oregon Department of Corrections, telepsychiatry and forensic
psychiatry - Washington County Mental Health Court Consultation
- Willamette University Law School (see also, Presentations)
- Oregon State Hospital Forensic Evaluations
Publications
Quimson-Guevarra P, Mobbs K. Need for Representation in a Pro Se Case. Journal of the American Academy of Psychiatry and the Law. September 2019 47:385-387.
Quimson-Guevarra, Pia, Jones TG. Post-Atkins Determination of Intellectual Disability in a Death Penalty Case in Oregon. Journal of The American Academy of Psychiatry and the Law. September 2016 44:394-396.
Education and Medical Residencies
Oregon Health and Science University (2013-2017)
Psychiatry Residency. Inpatient and Outpatient General Psychiatry, Psychiatry Treatment, OHSU (2013-2017)
Focus: Psychiatry Patient-Care with additional: Pharmacology, Community/Public Psychiatry, Women’s Mental Health, Forensic Psychiatry, Child Psychiatry, Cultural Psychiatry, Neuroscience, Psychotherapy, Evidence-Based Medicine, Leadership in Medicine, and Quality improvement in standard of care.
Resident, Psychiatry Patient-Care
- Inpatient general psychiatry, Oregon Health and Science University Hospital, and Portland Veterans Administration (VA)
- Outpatient psychiatry, OHSU, and Portland VA
- Inpatient consult-liaison psychiatry, OHSU and Portland VA
- Child psychiatry consultation, OHSU
- Outpatient addiction psychiatry, Portland VA
- HIV psychiatry, Portland VA
- Telepsychiatry/rural mental health, Portland VA
- Sleep medicine, Portland VA
- Community psychiatry with mental health intensive case management team (MHICM), Portland VA
- Community psychiatry with assertive community treatment team (ACT), Central City Concern, a non-profit providing health care to underserved populations for patients impacted by homelessness, poverty and/or addiction
- Forensic psychiatry elective on the forensic evaluation service, Oregon State Hospital
- Neurology, Portland VA
- Inpatient internal medicine, Portland VA
- Integrated primary care, Portland VA, and OHSU
- Integrated primary care, Portland VA, and OHSU
- Emergency Medicine and Emergency Psychiatry, OHSU, and Portland VA
Western University of Health Sciences
School of Osteopathic Medicine (2009-2013) Doctor of Osteopathic Medicine (DO, Medical Degree)
University of California, Berkeley
Bachelor of Science Degree in Nutritional Sciences,(2002-2006) Emphasis on Physiology and Metabolism
Presentations
Mood Disorders
Webinar presentation to a private clinical practice. Portland, Oregon (11/2022)
Testamentary Capacity
Willamette University College of Law (10/2018)
Career Panel for Forensic and Criminal Psychology
Symposium, Lewis and Clark College (2/2019)
Psychopharmacology
Didactic Psychopharmacology Presentations for 1st year OHSU psychiatry Residents, 2016-2017
- Treatment of Bipolar Disorders
- Treatment of Anxiety Disorders
- Psychiatric Drug-to-Drug Interactions
- Journal club presentation for OHSU adult psychiatry training program (8/2016)
- Applebaum PS. Assessment of Patients’ Competence to Consent to Treatment. N Engl J Med 2007; 357:1834 40.
Common Factors in Psychotherapy
Presentation to 2nd year OHSU Psychiatry Residents (7/2016)
Global Mental Health
Expert Hour to OHSU Adult Psychiatry training program (4/2016)
Evaluation of Consult and Liaison Service
Consult and Liaison Service rotations for OHSU Adult Psychiatry training program, Education Performance Committee (EPC) (8/2015)
Animal-Assisted Therapy
14th Course of Academic Development of Psychiatry (CADP) (3/2015)
Mortality and Morbidity (M&M)
Conference for OHSU Adult Psychiatry training program (4/2014)
Honors and Awards
Oregon Psychoanalytic Center (OPC) Diversity Scholarship (9/2016)
To increase underrepresented populations in psychoanalysis; awarded a scholarship to OPC fundamentals course.
University of California, Berkeley
University of California, Berkeley Graduation with Distinction (Top 10% of Graduating Class) (2006)