Experience

  • Private Practice, 2023-current

  • Seattle Children’s Hospital, Outpatient Psychiatry and Behavioral Medicine: Consulting Medical Staff, 2024-current; Primary Psychologist, Anxiety Intensive Program, 2023-2024; Staff Psychologist, 2021-2024

  • The Pediatric Center at Lester E. Cox Medical Center South, Staff Psychologist, 2019-2021

Training

  • The Pediatric Center at Lester E. Cox Medical Center South, post-doctoral fellowship in primary care, 2018-2019

  • Royal Oaks Hospital, National Psychology Training Consortium, pre-doctoral internship with emphasis in acute psychiatry services (APA-accredited), 2017-2018

Education

  • Psy.D., Florida School of Professional Psychology (APA-accredited), 2018

  • M.A., Florida School of Professional Psychology, 2013

  • B.A., University of South Florida, 2010

Publications and Research

Diana Bastien, Psy.D., ABPP

I am a licensed clinical psychologist and board-certified specialist in Clinical Child and Adolescent Psychology (ABPP), a distinction held by a limited number of psychologists in the United States. I also serve as a Consulting Psychologist at Seattle Children's Hospital. Families often seek my practice when a child has not responded as expected to previous treatment or is experiencing anxiety, specific phobias, OCD, tic disorders, or functional neurological symptoms requiring specialized, evidence-based care.

I earned my Psy.D. in Clinical Psychology and have trained and worked across pediatric primary care, children's hospital, academic, and outpatient settings. At Seattle Children's Hospital, I served as both a clinical psychologist and the lead psychologist for the Anxiety Intensive Outpatient Program, working closely with youth and families navigating complex anxiety and emotional challenges. My training across hospital-based specialty care, intensive outpatient treatment, research, and private practice allows me to approach each child from multiple perspectives rather than through a single treatment model.

My clinical approach is grounded in evidence-based assessment and treatment, with an emphasis on helping families understand why symptoms are occurring before deciding how to treat them. I believe thoughtful evaluation, individualized treatment planning, and collaboration with families provide the strongest foundation for meaningful, lasting change. I have specialized expertise in treating OCD, Functional Neurological Disorder (FND), generalized anxiety disorder, social anxiety disorder, panic disorder, specific phobias, tic disorders, and related conditions, while also supporting children and adolescents experiencing mood and broader emotional difficulties.

I am board certified through the American Board of Professional Psychology (ABPP) and maintain licensure in multiple states, allowing me to provide specialized telehealth services to families across the country. I remain actively involved in professional organizations and mentorship, which helps me stay engaged with advances in the field while contributing to the training and development of future psychologists.

In my private practice, my goal is to help children, adolescents, and families better understand their experiences and move toward meaningful, lasting change through compassionate, evidence-based care. I value clear communication, practical recommendations, and collaborative partnerships with families throughout the treatment process.

Outside of work, I enjoy spending time with my family and my two cats, a shorthair calico and a ragdoll, who may occasionally make an appearance during telehealth sessions.