Dr. DenBoer

Dr. John DenBoer is a full-time, Licensed Psychologist/Clinical Neuropsychologist. He holds two licenses, one in the State of Arizona and the other in the State of California. His professional service centers around employing neuropsychological assessment instruments to help detect and aid in the diagnostic classification of brain disorders (e.g., traumatic brain injury (TBI) and aging (e.g., dementia). He received his internship training at the VA Boston Healthcare System (where he held a dual academic appointment at Harvard Medical School and Boston University School of Medicine) and received his postdoctoral training at Barrow Neurological Institute (Phoenix, AZ). He has published extensively on diverse topics in Clinical Neuropsychology and has been an expert speaker at many local, national, and international conferences. He currently works at the Nicholls Group, where he specializes in Adult Neuropsychology, including medico-legal consultation.

In addition to his neuropsychology activities, Dr. DenBoer works as a Sports Psychologist. He is the Founder and Director of Mental Edge™ Tennis, which specializes in providing mental coaching services to competitive tennis players, ranging from club level players to top-ranked juniors, and including WTA and ATP tour professionals. In addition to conducting individual and group mental coaching sessions, he also does consultant work and speaking engagements. More information can be found at www.mentaledgetennis.com.

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Dr. Hoffman

Dr. Valerie Hoffman is an Arizona licensed psychologist who specializes in evaluating and treating children and teens with educational, behavioral, developmental, and social-emotional needs.  Dr. Hoffman's early training centered around assessment and treatment of Autism Spectrum Disorders. She received training in Applied Behavior Analysis (ABA) therapies through the University of California, San Diego and went on to deliver early intervention services for children with autism and developmental disorders.  While Dr. Hoffman continues to work with children with Autism Spectrum Disorders, her current practice includes diagnostic assessment and treatment of a variety of presenting concerns, such as Attention Deficit Hyperactivity Disorders, Learning Disabilities, Anxiety Disorders, Depressive Disorders, Attachment Disorders and other needs such as peer troubles/bullying, self esteem, divorce, separation anxiety, and grief/loss issues, among others.  Dr. Hoffman  also enjoys working with families and has been particularly successful  working with parents and teens to improve communication, reduce conflicts, and improve parent-child relationships.  She counsels adolescents individually, and as former therapist for children in the juvenile detention center, she has experience working with challenging teens.  Her treatment practices are solution focused and  skills based utilizing research based therapies such as cognitive behavior therapy and psycho-education.  Having former experience working as a preschool teacher, Dr. Hoffman also enjoys working with toddlers and young children. In particular, she enjoys working closely with parents in developing parenting practices that encourage optimal child development while preventing problem behaviors. Finally,  Dr. Hoffman's has a special interest in working with families with foster and adopted children, as she completed her doctoral dissertation researching successful characteristics of families with children adopted post-infancy. Dr. Hoffman enjoys active involvement in the professional community and she has served as the president of the Scottsdale Psychological Society and as the secretary of the Children's Services Network, in addition to volunteering and collaborating with agencies that serve children and families, including Arizonan's for Children, RISE Family Services, and Aid to the Adoption of Special Kids. 

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Dr. Karabatsos

Dr. Sarah Karabatsos received her Doctorate in Clinical Psychology, with specialization in Neuropsychology from Illinois School of Professional Psychology at Argosy University in Schaumburg, Illinois. She completed her APPIC-approved internship at Dean Medical Center. She has extensive training in assessment and treatment of children, adolescents, adults and geriatrics with neurodevelopmental and neurological disorders. She also has experience in therapeutic services, crisis intervention and family outreach with children and adolescents with learning disabilities, behavioral difficulties and mood disorders. Her areas of specialty and interests are autism spectrum disorders, traumatic brain injury, stroke and children who present with multiple symptoms including attention, learning and mood difficulties.  Dr. Karabatsos is seeing patients at The Nicholls Group for the second year as a post-doctorate trainee under the supervision of Dr. Christopher Nicholls; she received her licensure from the Arizona Board of Psychologist Examiners in June of 2014. 



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Dr. Lebovitz

Dr. Christina Lebovitz is a licensed psychologist in the state of Arizona. As a clinical psychologist, she serves infants to adults and provides evaluations, therapy and consultation, in addition to training in mental health issues. Identification of learning, developmental and clinical conditions is done in conjunction with school and primary care liaisons. Health care consultation is geared to building resilience and a positive outlook, with improvement of medical compliance and self-monitoring for chronic conditions, including weight loss and management. She emphasizes how people can thrive by building on strengths and uses cognitive behavioral approaches as well as play therapy and trauma processing (EMDR). Dr. Lebovitz has over 26 years of practice in Arizona, including hospital-based and community programs, plus independent practice. On the personal side, Dr. Lebovitz has gained invaluable insight by raising three children and enjoying a long marriage. Serving as co-founder and President of the Children's Services Network (www.csn-az.org) and as President of the Arizona Psychological Foundation broadens her awareness of public issues and facilitates multidisciplinary collaboration.

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Dr. Logerquist

Dr.Sally Logerquist is a licensed psychologist with extensive background in clinical and school settings as an evaluator, therapist and consultant.  She provides a wide range of intellectual, academic, social and behavioral evaluations including: Intellectual giftedness; Developmental Disabilities (Mental Retardation); Learning Disorders; Social, Emotional and Behavioral Disorders. Her area of specialty is working with individuals suspected of having an autism spectrum disorders.  Diagnostic information is translated into special education categories (when appropriate) based on current state and federal legal constraints.  The individual’s strengths and limitations are described in order to aid in the understanding of the reader and to ensure that the client obtains the appropriate services and accommodations that they need.  Recommendations include research-based interventions that have proven to be effective for use in home, school and/or work environments.

Dr. Logerquist provides individual and group therapy on a variety of issues, with a primary emphasis on social skill therapy.  Social skill therapy activities are designed to reduce skill deficits by teaching and practicing the social skills that are highly related to social success.  In addition therapy activities are directed reduce social anxiety by teaching and practicing calming strategies. The goal is to provide individuals with the necessary skills to experience positive reactions in their social interactions.

Evaluations for individuals suspected of having an Autism Spectrum Disorder include assessment of early childhood behavior as well as current behavior. The evaluation process culminates with a profile of the individual’s strengths and limitations related to social behavior. Factors that appear to impede social                                                                    progress will be identified. A description of strategies will be provided to address these factors. 

Evaluations for individuals suspected of having a processing deficit will include assessment of seven broad domains of ability using multiple cognitive measures. The evaluation process culminates with a profile of cognitive processing strengths and limitations and a description of the individual’s learning style.  Factors that appear to impede academic progress will be identified and strategies will be provided to address these factors.

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Dr. Nicholls

Dr. Chris Nicholls is a licensed psychologist in the state of Arizona, is a diplomate of the American Board of Professional Psychology and the American Board of Pediatric Neuropsychology, and is a Fellow of the American Academy of Clinical Psychology and American Academy of Pediatric Neuropsychology. Throughout his career, he has worked with several children's and adult hospitals and medical centers. He has worked in the areas of acute and chronic illness, neonatal intensive care, burns and trauma, general pediatrics and surgery. He has consulted with child protective service agencies, school districts, the Social Security Administration's Disability Determination Services Administration, and has performed forensic evaluations in personal injury, competency, and educational due process arenas. Dr. Nicholls has been on the clinical faculty of several major universities and graduate programs.

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Dr. Remson

Dr. Lynne Hebert Remson is a licensed and ASHA certified speech-language pathologist (SLP). She is a Board Recognized Specialist in Fluency Disorders (stuttering) and she also specializes in language-learning disorders such as dyslexia, learning disabilities and auditory processing disorders. Dr. Remson has over 30 years experience in communication disorders as a university professor, regional coordinator of special education, and as a clinician in private practice and in the public schools. She is currently the Chairman of the Speech and Hearing Professionals Advisory Committee to the Office of Special Licensing in the Arizona Department of Health Services. Dr. Remson was elected this year to the Executive Board of the National Stuttering Association. She is also a co-founder and co-leader of the award-winning Metro Phoenix NSAKids and TWiST groups for children and teens who stutter and their families. She is Lidcombe certified for preschool children who stutter. Dr. Remson has given many presentations on stuttering therapy based on principles of both stuttering modification and fluency shaping with school-aged children and adults. She has also given numerous presentations at conferences, school districts, and private practices across the country on language intervention that successfully integrates speaking, listening, reading and writing through high interest, developmentally appropriate materials and activities. This approach facilitates language development, syntax, vocabulary, phonics, word recognition, comprehension, spelling and writing. Dr. Remson enjoys collaborating with classroom teachers and families for literacy and fluency therapies. 

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Hannah Robicheau

Hannah Robicheau is an Arizona Licensed and Board Certified Behavior Analyst (BCBA) through the Behavior Analyst Certification Board. She received her masters of education in special education at Bridgewater State University in 2012. She initially went into teaching at a private neurorehabilitation school for children and adolescents with traumatic and acquired brain injury. Ms. Robicheau continued to work with children, adolescents, and their families both in the home, community, and school settings. Ms. Robicheau currently uses the science of Applied Behavior Analysis to treat and assess children, adolescents, and individuals with special needs who have behavioral challenges and skill deficits. She specializes in working with children, adolescents, and families/schools coping with autism, traumatic brain injury, and ADD/ADHD. Ms. Robicheau particularly enjoys helping parents and educators develop strategies and consistent behavior plans to help children who have problem behaviors and difficulty learning skills.

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Dr. Wilson

Dr. Felicia Wilson received her Doctorate in Clinical Psychology from Midwestern University in Glendale, Arizona.  She completed her internship at the VA Hudson Valley Health Care System in Montrose New York.  She has extensive training assessing and treating adults with posttraumatic stress disorder, substance abuse, traumatic brain injury, and neurological disorders.  She also has experience in therapeutic services, assessment of children and adolescents, cognitive rehabilitation, and crisis intervention.  Her areas of specialty and interest are traumatic brain injury, posttraumatic stress disorder, neuropsychology, and educational evaluations.  Dr. Wilson is seeing patients at The Nicholls Group as a first year post-doctorate trainee under the supervision of a licensed Psychologist. 



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Chung Jung Mun

Chung Jung Mun (also known as, Moon) joined The Nicholls Group to participate in his practicum training.  He is a third year doctoral student in Clinical Psychology at Arizona State University.  He received his Bachelor of Arts at Waseda University, Japan.  He has been researching self- regulation and the effectiveness of mindfulness-based interventions in various populations.  Moon is specifically interested in both adult Neuropsychology and psychotherapy,  but is seeing patients at The Nicholls Group in any age group under the supervision of Dr. Nicholls and Dr. DenBoer.



















Katie Panza 

Kaitlyn (Katie) Panza joins The Nicholls Group to participate in her practicum training.  She is a third year doctoral student in Clinical Psychology at Arizona State University, where she is working with Dr. Thomas Dishion, having come from an undergraduate career at Wellesley College.  After her undergraduate studies, Katie spent four years at the Yale Child Study Center working with children and adolescents diagnosed with Tourette's syndrome, obsessive-compulsive disorder and chronic hair pulling.  Katie has a specific interest in the Neuropsychology of adolescents and emerging adults, but is seeing patients at The Nicholls Group in any age group for therapy and clinical or educational evaluations under the supervision of Dr. Nicholls and Dr. DenBoer. 




















Shirley Yang

Shirley Yang joins The Nicholls Group to participate in her practicum training.  She is a second year doctoral student in Clinical Psychology at Midwestern University, Glendale.  Shirley completed her undergraduate degrees in Psychology and Human Development at the University of California, Davis.  After completing her undergraduate studies, Shirley spent three years working with children with Autism Spectrum Disorder and two years with at-risk school-age children.  As Shirley is still discovering her specific areas of interest, she is seeing patients at The Nicholls Group in any age group for therapy and clinical or educational evaluations under the supervision of Dr. Nicholls and Dr. DenBoer.