Dr. Mark Nguyen, PsyD, Ed.D.
Psychologist
Dr. Mark Nguyen, Psy.D., Ed.D.
Dr. Mark Nguyen, Psy.D., Ed.D., is a licensed clinical psychologist specializing in the treatment of chronic pain, trauma, anxiety, depression, behavioral addictions (including gambling), neurodivergent challenges and learning disabilities. He earned his doctorate in Clinical Psychology from The Chicago School of Professional Psychology and a doctorate in Educational Leadership from the University of Southern California. Dr. Nguyen provides culturally responsive, evidence-based care using approaches such as Acceptance and Commitment Therapy (ACT), Cognitive Behavioral Therapy (CBT), Trauma-Focused Therapy, Solution-Focused Therapy, mindfulness-based strategies, Motivational Interviewing, and Behavioral Activation to support emotional regulation, resilience, and meaningful behavioral change.
Dr. Nguyen has extensive clinical experience providing psychological assessment and psychotherapy to adolescents and adults facing complex emotional, behavioral, and health-related challenges. He works with individuals to help them develop healthier coping strategies, increase psychological flexibility, and improve daily functioning. His work often involves collaboration within interdisciplinary care teams to support patients adjusting to injury, medical conditions, learning disabilities and significant life stressors, with a focus on restoring functioning, strengthening resilience, and improving overall quality of life.
Areas of Expertise & Specialization Chronic pain management, Neurodivergent Population, Learning Disabilities, and behavioral addictions.
Robert G. Bota, MD, MSG, DFAPA
Psychiatrist
Director of TMS Clinic
Kiefer Greenspan, MD
Psychiatrist
Director of Ketamine Clinic
Arthur Chou, MD
Psychiatrist
Director of Ketamine Clinic
G. Mustafa Surti, MD
Psychiatrist
Director of Geriatric Psychiatry
Arde Anoshivani, MD
Psychiatrist
Addiction Specialist
Mani Vahidi, MD
Psychiatrist
Director of Addiction Psychiatry
Lauren Dunn, PMHNP-BC
Psychiatric Nurse Practitioner
Ketamine Treatment Specialist
Ketamine & TMS Clinic
Health Insurance
About us
Contact us
About Harbor Psychiatry & Mental Health
We believe outstanding healthcare is delivered when we merge the science of medicine with the compassion of our hearts. We refer to this as “head and heart together,” inspiring constant improvement and lasting success.
Psychiatrists Orange County CA
Psychologists Orange County CA
Contact us
Address: 4631 Teller, Suite 100
Newport Beach CA 92660
Phone: (949) 887-7187
Email: info@harbormentalhealth.com

































