About Us

Welcome to our Office  

Wiest Neuropsychology is a specialty psychology business with a primary focus on evidence-based practices in the assessment and treatment of child, adolescent, and young adult neurodevelopmental disorders such as ADHD, autism spectrum disorders, and learning disabilities (e.g. dyslexia, dysgraphia, and dyscalculia) as well as mental health problems in areas of anxiety, mood, and thought.  

Additionally, we treat adults individually, couples, and in family format.  Our team has extensive experience and training; all licensed as psychologists, educational psychologists, or special education teachers.  Moreover, several of our members have National Board Certification in areas such as 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, MA. 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, MA. 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. 

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.