About Our Providers

Valerie Kemper PsyD

Valerie Kemper, PsyD

Licensed Psychologist, Clinical Neuropsychologist is the founder and Clinical Director of Kemper & Associates Neuropsychological Services.

She has a Bachelor of Science degree in Aviation Management from Florida Institute of Technology and is a licensed private pilot, holds a Master of Arts degree in Community Psychology with a concentration in Clinical Psychology from Russell Sage College, a Doctorate Degree in Psychology with a specialization in Marital and Family Therapy from Alliant University, and has an additional two year post-doctoral re-specialization in Clinical Neuropsychology from Fielding University. She has worked in the mental health field in various capacities since 1988. Dr. Kemper is a licensed psychologist in the states of Arizona and New York. For the past several years, Dr. Kemper has concentrated her clinical work on evaluations. She conducts psychological and neuropsychological evaluations for an array of ages for diagnostic purposes and to make treatment recommendations to other providers. Such evaluations are performed to diagnose ADHD, autism, learning disabilities, dementia, traumatic brain injury, neurocognitive disorders, mood disorders and other psychological disorders. She also performs evaluations to make recommendations about readiness for certain surgical procedures, return to work readiness, and disability determination.

Andrew Fitzgerald, PhD

Andrew Fitzgerald, PhD, Licensed Psychologist, is the Intake Coordinator and Clinical Manager at Kemper & Associates Neuropsychological Services. He has a Bachelor of Arts in Psychology, a Master’s degree in School Counseling, and a Doctoral Degree in Counseling Psychology through Northern Arizona University. He has worked as an elementary school counselor and a counselor in private practice. He has taught community college courses and at Northern Arizona University, with subjects ranging from Psychology 101 up to graduate-level counseling and psychology courses. Dr. Fitzgerald completed a 2-year post-doctoral residency in neuropsychological assessment under the supervision of Dr. Kemper. Dr. Fitzgerald has worked with Dr. Kemper since 2015 and during that time he has provided counseling, psychological and neuropsychological evaluation, as well as being a mentor, supervisor, and trainer to many graduate students, interns, and employees.

Andrew Fitzgerald PhD
Kathryn Goshorn MSN APRN PMHNP-BC

Kathryn Goshorn MSN, APRN, PMHNP-BC

Kathryn Goshorn MSN, APRN, PMHNP-BC, earned an Associate of Science in Nursing from Kent State University. She graduated Magna Cum Laude with her Bachelor’s Degree in Nursing from the University of Phoenix. She then graduated Magna Cum Laude from Walden University with her Master of Science in Nursing with a concentration on Psychiatric Mental Health across a life span. She is a Board Certified Psychiatric Mental Health Nurse Practitioner through the American Nurses Credentialing Center. She is a member of Sigma Theta Tau International Honor Society of Nursing, the American Nurses Association, and The Arizona Nurses Association. She has 10+ years of experience working with patients of all ages in the mental health population. She has treated patients with mental health issues in a variety of inpatient and outpatient settings in both the State of Ohio, and Arizona.

Zachary Krings, PhD

Zachary Krings, PhD, Autism Specialist, graduated magna cum laude from Northern Arizona University in 2010 with bachelor’s degrees in psychology and journalism. He earned his Ph.D. with distinction from Northern Arizona University in Educational Psychology with a School Psychology emphasis. Dr. Krings has worked under the supervision of Dr. Kemper in conducting autism spectrum disorder evaluations since 2015. In his time at KANS, he has also assisted in intake interviewing and conducting academic, cognitive, and neuropsychological testing with individuals across the lifespan.

Zachary Krings PhD
Christopher Barthule MS BS

Christopher Barthule, MS, BS

Christopher Barthule, MS, BS, Psychometrist, earned his master’s degree in psychology from Grand Canyon University in 2018 and his bachelor’s degree in psychology from Arizona State University in 2012. He has prior experience as an investigator for the Arizona Department of Child Safety. His work with KANS involves assisting in intake interviews and conducting cognitive and neuropsychological testing of patients under the supervision of Drs. Kemper and Fitzgerald.

Sasha Kight, BS

Sasha Kight, BS, Administrative Medical Assistant, earned her Bachelor’s of Science in Life Science from Arizona State University. She has many years experience coordinating health care scheduling. She interfaces with patients scheduling appointments and oversees file management.

Sasha Kight BS
Lisa Gonzales-Vizzerra

Lisa Gonzales-Vizzerra

Lisa Gonzales-Vizzerra, Administrative Medical Assistant, has many years experience in working with Dr. Kemper and managing the front office. She manages verification of patient benefits, requests for appointments, coordinates referrals, and works with clinical staff to ensure patient care.