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About Us

Welcome to our Office  

Wiest Neuropsychology specializes in using evidence-based practices for the assessment and treatment of child, adolescent, and young adult neurodevelopmental disorders such as attention deficit hyperactivity disorder (ADHD), autism spectrum disorders (ASD), and learning disabilities (e.g., dyslexia, dysgraphia, and dyscalculia).   

We also offer customized psychotherapy for people of all ages for a variety of mental health challenges. Therapy has been shown to have benefits such as better relationships, solutions to specific problems, and significant reductions in feelings of distress. The therapist will assist clients in achieving their goals by using an eclectic set of interventions such as cognitive behavioral, person-centered, solution focused, narrative, hypnosis, and Eye Movement Desensitization Reprocessing (EMDR) therapies. We offer therapy for individuals, couples, and families.  

Our team members have extensive experience and are licensed psychologists, educational psychologists, or special education teachers. Moreover, several of our members have National Board Certifications, including clinical psychology, school psychology, school neuropsychology, and family therapy.  

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Faculty at Our Center

DUDLEY J WIEST, Ph.D., ABPP in School Psychology, ABSNP in School Neuropsychology,  Licensed Psychologist, Licensed Educational Psychologist, Credentialed as School Psychologist, Emeritus Professor and Coordinator of School Psychology Program at California State University, San Bernardino 25 years.  


JOSEPH CERVANTES, Ph.D., ABPP in Clinical Psychology, ABPP in Family Psychology, Licensed as Psychologist, Professor of Family Therapy, California State University 25 years. Fluent Spanish speaking. 


DIANE L WIEST, M.A., ABSNP in School Neuropsychology.  Licensed as Educational Psychologist, Credentialed as School Psychologist.  Lead School Psychologist; Preschool Autism, in Placentia Yorba Linda School District 25 years. 


DEBRA JARVIS, M.A., Special education instructor and administrator for over 30 years. Trained in Slingerland and specialized approaches to reading intervention. 


EUGENE WONG, Ph.D., Licensed Psychologist, Professor and Director of Child Development, California State University, San Bernardino, Member of CSUSB Neurodevelopmental Institute. Fluent Cantonese speaking. 

JESSIE KLINKENBERG, M.A., Associate Marriage and Family Therapist #131902, Under the Supervision of Dr. Dudley Wiest, Ph.D. Prior to working for Wiest Neuropsychology, Jessie spent 6 years working as a high school counselor and mental health specialist at a local private high school. Jessie specializes in working with teen girls and women.

KATIE MORRIS joined the practice as a part time assistant in January of 2020. She now manages the front office on an almost fulltime basis. Prior to Wiest Neuropsychology, she worked as a full time mom and, for almost 20 years, at First American Professional Real Estate Services as a software trainer, a business analyst and a sales representative. 

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