Diana Bastien, Psy.D., ABPP

I am Dr. Diana Bastien, a licensed clinical psychologist specializing in the assessment and treatment of OCD, PANS, tic disorders, and FNSD. I am board-certified in Clinical Child and Adolescent Psychology by the American Board of Professional Psychology (ABPP), a distinction held by a select few in the United States, and I am licensed in Washington and Oregon and credentialed to practice telepsychology in most US states.

I earned my Doctor of Psychology in Clinical Psychology in 2018 and as a graduate student gained valuable experience at the USF Rothman Center for Pediatric Neuropsychiatry, where I contributed to research on PANS in collaboration with top institutions like Yale, NIMH, and Johns Hopkins. The research in which I participated was published in prominent journals and has informed my clinical practice. I completed an APA-accredited residency at Royal Oaks Hospital and a postdoctoral fellowship in pediatric integrative primary care psychology at Cox Medical Center.

From 2021 to 2024, I was an Attending Psychologist at Seattle Children’s Hospital, where I led the Anxiety Intensive Outpatient Program for one year. In 2024, I completed advanced training in pediatric OCD through the International OCD Foundation.

In 2023, I established my private practice, with the goal of offering compassionate, evidence-based therapy focused on empowering children, families, and adults. I utilize Cognitive Behavioral Therapy (CBT), Exposure and Response Prevention (ERP), and family-based interventions to help patients improve their well-being and reach their full potential. I also maintain a Consultant Medical Staff appointment at Seattle Children’s Hospital.

Whether seeking treatment for your child or yourself, I provide a supportive, patient-centered environment where your concerns are addressed with expertise and care.