We are now offering completely customized virtual neuropsychological testing assessments and
remote neurofeedback! Schedule your assessment and treatment today

About our team


Meet Our Team

Many use our services to provide answers to their questions about their struggles in school, home, work, or socially. Our team offers comprehensive consultations and assessments to identify strengths and weaknesses, to provide appropriate diagnoses, and to work with individuals implementing various treatment options in order to help them succeed. Our goal is to provide services to enhance healthy social and emotional functioning across the lifespan.


Center for emotional health

Richard D. Abbey, Ph.D.

Clinical Neuropsychologist
Board Certified in Neurofeedback DR.RICHARD.ABBEY@ABBEYCLINIC.ORG

Richard Abbey, PhD, is a licensed clinical neuropsychologist and psychologist with extensive training and experience as a clinician and researcher. He specializes in neuropsychological evaluation and treatment of children, adults, and seniors. Dr. Abbey is the director of neuropsychological services at Abbey Neuropsychology Clinic in Palo Alto, California.

Dr. Abbey provides expert neuropsychological care for a broad array of conditions, from learning disorders, attention deficit hyperactivity disorder (ADHD), autism, and social communication disorder, to a variety of brain-related medical complications, including traumatic brain injury, stroke, cancer, epilepsy, and many rare health conditions. He also provides early detection of dementia, Alzheimer’s disease, and other age-related conditions.

As a respected researcher and lecturer, Dr. Abbey has made multiple presentations at international conferences and has published book chapters and professional journals. His research topics include dyslexia, ADHD, quantitative electroencephalography (qEEG) brain mapping, and neurofeedback.

Dr. Abbey completed his neuropsychology postdoctoral fellowship at Cincinnati Children’s Hospital Medical Center, and he was formerly a faculty member as a clinical neuropsychologist at Stanford University. He is board-certified in neurofeedback by the Biofeedback Certification International Alliance, and he is also board-certified as a diplomate in Quantitative EEG. In addition, he is a board member of the Scientific Advisory Board for LearningRx.

Dr. Stephanie Abbey is a licensed psychologist who provides psychotherapy to teens and adults. She helps with a variety of concerns, including difficulties with relationships, life transitions, stress, anxiety, depression, body image, grief/loss, trauma, and sexual orientation.

She works collaboratively with her clients to identify and cultivate their strengths so they can reach their goals and lead happier, healthier lives. Dr. Abbey integrates issues of diversity and explores clients’ needs within the context of their race, ethnicity, gender, sexual orientation, and religious beliefs.

Dr. Abbey has experience working at community mental health centers, inpatient hospitals, residential treatment centers, and university counseling centers, including Santa Clara University.

Center for emotional health

Stephanie C. Abbey, Ph.D.

Licensed Psychologist
Center for emotional health

Diana M. Barrett, Ph.D.

Licensed Psychologist

Diana Barrett, PhD, is a licensed psychologist who specializes in the assessment, diagnosis, and treatment of children, adults, and seniors. She is the director of assessment at Abbey Neuropsychology Clinic where she also provides neuropsychological care to the Palo Alto, California, community.

Dr. Barrett provides neuropsychological assessment, consultations, therapy, parent therapy, executive function therapy, and interventions to clients of all ages. She has expertise in diagnosing and treating a broad range of conditions, such as learning disabilities, developmental disorders, autism spectrum, attention deficit hyperactivity disorder (ADHD), anxiety, depression, and eating disorders.

After earning her doctor of philosophy degree from the University of Montana in Missoula, Dr. Barrett completed an internship at the University of Utah Neuropsychiatric Institute in Salt Lake City. During her internship, Dr. Barrett gained experience providing care for children and adults at both in-client and day-treatment facilities. 

Dr. Barrett completed her post-doctoral training at the Stanford University School of Medicine in Stanford, California. This training focused on evaluation and therapy services for children, adolescents, and families.

Rachael Little, MSc, is a licensed professional clinical counselor and an associate marriage and family therapist with extensive training and experience in neurofeedback and neuromodulation. She also provides assessment and psychotherapy to children, individuals, couples, and families at Abbey Neuropsychology Clinic in Palo Alto, California.

Ms. Little applies her skills to address a broad range of conditions. Clients trust her expertise for the treatment of attention deficit hyperactivity disorder (ADHD), learning disorders, anxiety, depression and other mood disorders, obsessive-compulsive disorder (OCD), and traumatic brain injuries.

As an experienced lecturer, Ms. Little has presented on the evolving field of neurofeedback at numerous conferences across the United States. She earned her Bachelor of Science in neuroscience from Bishop’s University in Sherbrooke, Canada. Ms. Little then completed her Master of Science through the clinical psychology/marriage and family therapy/licensed professional clinical counselor program at Notre Dame de Namur University in Belmont, California. 

Prior to joining Abbey Neuropsychology Clinic, Ms. Little provided care for children and adults in community-based mental health settings around the San Francisco Bay Area.

Emotional health

Rachael Little, M.Sc.

Licensed Marriage & Family Therapist
Licensed Clinical Counselor RACHAEL@ABBEYCLINIC.ORG

Performance Intervention Specialist

Emotional health

Rachelle Valenzuela, M.SC


Rachelle comes to us from Ann Arbor, MI with more than 7 years of experience in vision, communication science, and concussion rehabilitation. Rachelle created programs such as the move and learn program, visual training, and the concussion program, enhancing brain function with movement and attention. Rachelle has been able to help build the center to a more integrative multi-modal approach to learning and recovery. She has studied and worked with Attention Deficit Hyperactivity Disorder (ADHD), Autism Spectrum Disorder (ASD), traumatic brain injuries, concussions and neurological disorders, helping her understand the different needs of each client. Rachelle is also a huge fan of playing basketball and advocates for enhancing visual skills to improve athletic and cognitive performance.


Victoria Trebbi graduated with a degree in Psychology and Education from Stetson University. She works with individuals of all ages and different cognitive backgrounds, utilizing Neurofeedback and interactive learning programs such as LearningRX. She provides various forms of cognitive training to help individuals with attention, anxiety, memory deficits, autism spectrum disorder, and learning disabilities. This all-inclusive approach allows her to help individuals reach their overall goals.

Foundations early learning center

Victoria Trebbi, B.A.


Katy Sanchez graduated from Loyola Marymount University with a degree in Psychology and Education. She has experience working with clients of all ages who are seeking help for anxiety, traumatic brain injuries, concussions, memory loss, mood disorders, and Autism Spectrum disorder. Katy is trained in Neurofeedback, Biofeedback, and LearningRx, in particular working with individuals who have reading difficulties.

Jordann Hink graduated with degrees in Psychology from Northern Arizona University and Arizona State University. She is one of our cognitive trainers and has experience working with individuals of all ages to help with various conditions, including ADHD, anxiety, concussions, and autism spectrum disorder. Jordann is trained in Neurofeedback, Biofeedback, and various learning intervention programs.

Shannon Locke graduated from Oregon State University with a degree in Biological Anthropology. Prior to coming to the Abbey Clinic, she worked in education, where she gained extensive experience working with children with traumatic brain injuries, autism spectrum disorder, and dyslexia. Shannon is one of our cognitive trainers, and is trained in Neurofeedback, Biofeedback, and Learning Interventions.

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