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Dane A. Higgins, Ph.D.

Clinical Neuropsychologist

Dr. Higgins has 25 years of experience in providing clinical services in neuropsychological assessment of a variety of patient populations, such as those with mild cognitive impairment (MCI), dementia-related memory loss, other neurodegenerative illnesses, movement disorders, acquired brain injuries through traumatic brain injury or stroke, postconcussion syndrome, differential diagnosis issues (e.g., depression vs. dementia), AD/HD, intellectual functioning, and learning disorders.  Specialty with memory disorders, differential diagnosis among the various dementia syndromes and related symptomatology. Comprehensive Neuropsychological Services (CNS) Chief Clinical Neuropsychologist and Director of Clinical Services.

My goal is - to help people to use those hidden, lost or undeveloped forces of their amazing brain to the max. capacity.

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Anneke Kniestedt, B.A.

Child/Adult Psychometrist

Anneke has been administering and scoring neuropsychological assessment to clients ages 6 to 65 since 2017. She has experience working in a hospital setting where she worked with patients who had a brain injury or concussion. She worked in a private practices with patients who have ADD/ADHD, Learning Disabilities, Autism, Anxiety, OCD, and Depression. She enjoys working with people from all backgrounds and walks of life. She finds pleasure in helping people figure out more about themselves, and being a part of their treatment process.

Anneke was born and raised in Seattle, WA. She recently moved to Phoenix, AZ to be in a sunnier location. She enjoys the outdoors and spending time with her friends and family. 


Jaqueline Alvarez


She is happy to answer any of your questions, schedule your appointments and help resolve your concerns. She is fluent in English and Spanish. 

Stephanie Suarez Gonzalez


She is happy to answer any of your questions, schedule your appointments and help resolve your concerns. She is fluent in English and Spanish. 


Michelle Silerio B.A.

Neuropsychological assistant

She studied at Grand Canyon University, earning her Bachelor's of Science in the discipline of psychology. Her degree emphasized research methodology and proficiency in writing scientific papers. Michelle is a Neuropsychologist's assistant at CNS Memory Clinic, who reviews assessment data from clinical interviews to ultimately compose personalized reports for patient, organizes and processes collected data under direct neuropsychologists supervision.  

Her belief is that with the power of active listening, professionals can help to understand, validate, evaluate and provide an accurate treatment for people.


Maryna Bilyk, M.S.

CEO/Clinical Director

I'm Maryna Bilyk, a fervent advocate and researcher of neurodiversity with over two decades of multifaceted experience in mental health. In my current role as Clinical Director/CEO at Peak Performance Institute, I manage administrative sector of the clinic, dedicated to amplifying service quality and efficiency.

My academic and professional journeys are enriched by a Master’s in Counseling Psychology, specialized training in Psychodrama, Emotionally Focused Therapy, Cognitive Behavioral Therapy, Schema Therapy and Mindfulness training. I worked as a counselor in Ukraine for over 17 years. I'm currently working on getting licensed in Arizona. I enjoy working in a professional setting with special focus on the neurodiverse community and neuropsychology. Outside my professional realm, I'm a devoted mother, stepmother, step grandmother, and wife, with a heart deeply rooted in nature, gardening, and the invigorating slopes as a skiing enthusiast. I speak English, Ukrainian, Russian languages.


Chelsey Boydston M.S.

Child Psychometrist

Chelsey received her Master of Science in Psychology from Arizona State University. She has experience administering and assisting in the collegiate level courses of Abnormal Psychology, Personality Theory and Research, and Advanced Social Psychology. She is also proficient in the discipline of Behavioral Health applying the skills of discrete trail teaching, natural environment teaching, and behavior reduction interventions to decrease maladaptive behaviors in children with autism. Her interests in the field of psychology include the application of statistics to the social sciences, the study of sensation and perception, and understanding how changes in the physiological brain affect behavior. As a child psychometrist, she enjoys the opportunity to help diverse individuals develop increased self-efficacy and a greater understanding of themselves.


Tashea West M.A.

Adult Psychometrist

 Tashea (Tah-shay) obtained her Master of Science in Educational Psychology at the University of Wisconsin-Milwaukee. She has a history of administering IQ tests in the school setting with students ages 7-18 and is excited to expand her clientele. Her hobbies include painting and listening to music. She is eager to support others in any way possible.

Humberto Gonzalez

Adult Psychometrist

Humberto obtained his Bachelor’s Degree in Psychology at Northern Arizona University and is working on his Master's in Clinical Psychology and Bachelor's in Biomedical Science. He is bilingual in English-Spanish. 


Ashley Connelly 

Office Manager and Billing Coordinator 

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