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Forensic Psychiatric Expert Witness and Consultant

Dr. Pia Quimson-Guevarra

Dr. Pia Quimson-Guevarra

1975 NW 167th Place
Suite 100-20

Beaverton, Oregon 97006

Phone(503) 832-9293


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Dr. Pia Quimson-Guevarra is board-certified in psychiatry and forensic psychiatry. She assess mental health conditions, including anxiety, PTSD, depression, bipolar disorder, and schizophrenia, in the context of comorbid medical issues. She is a certified forensic evaluator with the state of Oregon.

Currently, she works a psychiatrist providing clinical care for a community mental health organization. Her patients consist of individuals who suffer from severe and persistent mental illness, such as bipolar disorder and schizophrenia, that also have a history of forensic involvement. She also has a private practice where she provides clinical care and forensic services.

Previous experiences include performing competency to stand trial and criminal responsibility evaluations at the Oregon State Hospital and providing care to local jails and prisons.


Dr. Pia Quimson-Guevarra provides psychiatric expert witness services, including chart review, consultation, evaluation, and expert testimony in the following topics:

1. Civil Cases

- Civil Commitment
- Psychiatric Disability (IMEs, Social Security Disability, Worker's Compensation, Fitness for Duty)
- Psychiatric Malpractice
- Tort Claims
- Testamentary Capacity

2. Criminal Cases

- Competency to Stand Trial (Aid and Assist)
- Criminal Responsibility
- Competency to Waive Miranda rights

Areas of Expertise

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Dr. Pia Quimson-Guevarra graduated from medical school in 2013 from Western University of Health Sciences in California. She completed her psychiatry residency training at Oregon Health and Science University (OHSU) and pursued additional training in Forensic Psychiatry.

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