Free Reading Assessments June 17 and August 12

Insight Collective’s mission is to provide comprehensive assessment and treatment to young adults and children utilizing the best standards of care. Each Insight Collective professional contributes specialized knowledge in their chosen field to allow for a thorough understanding of our clients’ needs. Through in-depth knowledge of our client’s unique strengths and weaknesses across multiple areas, our team is able to devise a more focused and effective treatment plan. We understand that accessing treatment interventions is difficult to navigate alone. To help our clients navigate the specialized recommendations, all of our families are matched with a facilitator who will provide continued help and support while our families work to put treatment services into place.   

Taking individual steps towards a final diagnosis or treatment plan can be laborious and time consuming. Oftentimes, completing a neuropsychological assessment is only the first step to understanding our client and their needs. At Insight Collective, we strive to eliminate the step-by-step referral process and instead provide our families with a transdisciplinary assessment at one convenient location. Open communication between team members allow for more timely results. Providing treatment quickly and efficiently is especially important when working with children, so that they may benefit from intervention during critical developmental periods. Fewer appointments also equate to fewer missed school days.

Insight Collective Practitioners

Oren R. Boxer, Ph.D. bio
Clinical Neuropsychologist

Krista Greenfield, Psy.D. bio
Pediatric Neuropsychology Fellow & Director of Training

Stephanie Kohlman, Psy.D. bio

Seda Terzyan, Ph.D bio

Ani Dillon, Psy.D. bio
Clinical Neuropsychologist


Margaret H. Briggs, Ph.D., CCC-SLP bio
Speech-Language Pathologist

Catherine M. Villagran, M.A., CCC-SLP bio
Speech-Language Pathologist

Diane M. Danis, M.D., MPH bio
Developmental Pediatrician

Ted Hutman, Ph.D. bio
Clinical & Developmental Psychologist

Matthew Hayutin, M.Ed. bio
Educational Therapist


Chloe Willis, M.A., BCBA bio
Board Certified Behavior Analyst

Meet Insight Collective’s Newest Practitioner ↓

Heidi Gunderson, LMFT bio
Marriage and Family Therapist
Certified Mindfulness Facilitator 

Biographies of Insight Collective Practitioners

Oren R. Boxer, Ph.D.
Dr. Boxer is a licensed clinical neuropsychologist and specializes in the assessment of children and young adults in order to evaluate intelligence, learning and recall, attention skills, perception, motor skills, processing speed, problem solving, and coping skills and styles. Dr. Boxer’s practice utilizes an “evidence-based” assessment and treatment approach that employs the best scientific evidence to facilitate recommendations for patient care. This scientifically-based neuropsychological approach provides each client with a customized comprehensive evaluation grounded in research with the goal of uncovering neurocognitive challenges associated with school, work, or social environments, as well as empirically supported treatment options. Dr. Boxer received a Master's degree in psychology from the University of Chicago before completing his Ph.D. in clinical psychology at the California School of Professional Psychology (APA Approved). He completed an APA-approved clinical internship in clinical neuropsychology at the UCLA Department of Psychiatry and Biobehavioral Sciences. He remained at UCLA for his postdoctoral studies in pediatric neuropsychology. Dr. Boxer is a licensed psychologist in the state of California (PSY 24357). In addition to seeing clients in his private practice, Dr. Boxer also serves as a clinical faculty member at the UCLA Semel Institute for Neuroscience and Human Behavior within the David Geffen School of Medicine. His clinical and research work has focused on child/adolescent neuropsychological assessment, diagnosis, and treatment planning, as well as research encompassing evidence based therapies for Attention Deficit Hyperactivity Disorder (ADHD). Dr. Boxer has also published work on evidence based medicine in neuropsychology and leads ongoing research studies in the field of neuropsychology. <top>

Krista Greenfield, Psy.D.
Dr. Greenfield is a Postdoctoral Fellow and registered psychological assistant in the state of California (PSB-37636) under the supervision of Dr. Boxer. In addition to seeing clients in Dr. Boxer’s private practice, she also heads the Practicum Training Program, which exposes select graduate students to clinical pediatric neuropsychology through didactics, research, and assessment experience. Dr. Greenfield's clinical work has focused on neuropsychological assessment throughout the lifespan. She completed year-long clinical placements at Kaiser Permanente's Pediatrics Department and University of California (Irvine) Medical School's Department of Psychiatry and Human Behavior. Other areas of specialty include behavioral management of children with developmental disorders and individual/group therapy. Dr. Greenfield has presented at local and international conferences on topics such as the lasting neurocognitive effects of oncology treatment and executive functioning differences in children with neurodevelopment disorders. She has also published work on the psychosocial impact of traumatic brain injury. Dr. Greenfield received her Bachelor's degree from the University of Pennsylvania before completing her Psy.D. at The Chicago School of Professional Psychology. <top>

Stephanie Kohlman, Psy.D.
Dr. Kohlman is a Postdoctoral Fellow and registered psychological assistant in the state of California (PSB- 94022133) under the supervision of Dr. Boxer. Dr. Kohlman provides neuropsychological assessment in Dr. Boxer’s Practice.  She heads the neurofeedback clinic and has worked with a variety of children, adolescents, and adults treating attention weaknesses, emotional dysregulation, anxiety, as well as motor tics.  She also collaborates with Dr. Boxer and Dr. Dillon to run social skills classes for children.  Dr. Kohlman’s clinical training has focused on treatment of individuals throughout the lifespan. She completed year-long clinical placements at Kaiser Permanente's Pediatrics Department and BHC Alhambra Hospital’s pediatric inpatient unit.  Other areas of specialty include individual therapy, intake assessments, and treatment planning with children and adolescents in addition to program outcomes assessments. Dr. Kohlman has presented at local and international conferences on topics such as the lasting neurocognitive effects of oncology treatment and executive functioning differences in children with neurodevelopmental disorders. Her doctoral research dissertation focused on the impact of brain tumors on executive functioning and quality of life in adults with primary cancers.  Dr. Kohlman received her B.S. degree from Millikin University in Illinois before completing her M.A. and Psy.D. at The Chicago School of Professional Psychology. <top>

Seda Terzyan, Ph.D.
Dr. Terzyan is a Postdoctoral Fellow and registered psychological assistant in the state of California (PSB 94022556) under the supervision of Dr. Boxer.  Dr. Terzyan’s clinical work has focused on neuropsychological assessment and psychotherapy across the lifespan.  She received her doctoral degree in clinical psychology at Loma Linda University (APA Approved).  Dr. Terzyan’s dissertation and research were focused upon the impact of anxiety disorders on cognitive functioning, and vice versa.  She has been trained in Acceptance and Commitment Therapy (ACT), and Cognitive-Behavioral Therapy (CBT), and Cognitive Processing Therapy (CPT), by certified National Trainers.  She has also trained for three years at the Gestalt Associates Training Los Angeles, an emotion-focused psychotherapy for individuals across the life span.  Dr. Terzyan also completed a year-long APA-accredited clinical internship at the Pacific Islands VA Healthcare System in Honolulu, Hawaii, working with Veteran and Military Active Duty populations, conducting evaluations to assess for traumatic brain injury, and providing “evidence-based” treatments for combat related Post-Traumatic Stress Disorder.  Dr. Terzyan also completed a year-long clinical placement at the Loma Linda University Medical Center, Rehabilitation Hospital, where she was trained as a neuropsychology liaison on an interdisciplinary medical team, providing brief assessments and short-term evidence-based psychotherapy for patients with complex spinal and brain injuries.  Prior, Dr. Terzyan completed a year-long placement at the Loma Linda University Behavioral Medicine Center (BMC), working on the high-risk child and adolescent inpatient unit.  Dr. Terzyan completed her Master’s degree in clinical psychology with an emphasis on neuropsychology at Loma Linda University, and completed her Bachelor of Arts degree in psychology at the University of California, Los Angeles (UCLA). <top>

Ani Dillon, Psy.D.
Dr. Dillon has extensive background in child psychology and development, as well as clinical training and experience with individual, group and family therapy. Her assessment background includes considerable experience with: Attention Deficit Hyperactivity Disorder, Learning Disabilities, Developmental Disabilities, Mood Disorders, Anxiety Disorders, Tic Disorders and other behavioral disorders. Well versed in both neuropsychological and psychological assessment with children, adolescents, young adults and adults, she also has expertise in ADHD and psychodiagnostic assessment in adults. Dr. Dillon has dual undergraduate degrees in English and Education (teaching degree) from Lake Forest College and a Masters in school counseling from Illinois State University. After finishing her Masters degree, she was the sole proprietor of an Educational Consulting Office in Grand Rapids, Michigan serving more than 500 clients.  Dr. Dillon attended Pepperdine University and completed a doctorate in clinical psychology with specialization in child assessment and pediatric neuropsychology. From 2006 to 2009, she was lead clinician on the UCLA ADHD Genetic Study at the Semel Institute for Neuroscience. In May 2011, she completed a two-year postdoctoral fellowship as a research scholar at UCLA's Semel Institute. Her duties there included both clinical neuropsychological assessment at UCLA's Medical Psychological Assessment Center and continued research with the UCLA ADHD Brain Imaging study and ADHD Brain Laterality Study.  Degrees in education and school counseling, as well as experience as an educational consultant allow Dr. Dillon unique insights into the process of educational planning. Her background in teaching and school counseling also help to facilitate working relationships with schools and teachers. Dr. Dillon truly loves her work and brings that optimism and passion to each client. <top>


Margaret H. Briggs, Ph.D., CCC-SLP
Dr. Briggs is a Board Recognized Specialist in Child Language and a Fellow of the American Speech-Language-Hearing Association. She received her undergraduate and graduate degrees at the State University of New York and her Ph.D. in educational psychology at UCLA. Margaret has served on the faculty of a number of universities, lectures internationally, and is active in our national association. She has published a number of articles, chapters, and a book describing our cutting-edge methods. She has more than 30 years of clinical experience in a wide variety of settings. Margaret is a nationally recognized expert in working with families of young children with special needs. She specializes in school-age children with language disorders, those who stutter, and those on the autism spectrum with social communication difficulties. She has completed Michelle Garcia-Winner's Social Thinking Mentor Training Program. <top>


Catherine M. Villagran, M.A., CCC-SLP
Catherine has been a speech-language pathologist for more than 25 years. From the beginning of her career, she has specialized in the birth to five year old population. She has special interest in tongue thrust remediation, feeding therapy, and oral motor treatment. She has had specific training in neurodevelopmental treatment (NDT) techniques and is certified in SCERTS and PROMPT. Catherine has always enjoyed working with families in her therapy sessions, and is also certified in the Hanen Program for Parents. Catherine lives in Glendora with her husband and two children. <top>


Diane M. Danis, M.D., MPH
Dr. Danis is a Pediatrician with over 20 years of experience caring for children. For the past 20 years, her medical practice has been devoted to diagnosing and providing treatment recommendations and medical interventions for children with special needs. Dr. Danis is Board Certified in both general Pediatrics and Developmental/ Behavioral Pediatrics. A graduate of the University of Southern California School of Medicine, Dr. Danis did residency training at the Los Angeles County/USC Pediatric Pavilion. She served an additional year as Chief Resident in Pediatrics following her residency. After several years of working as a pediatrician in private practice, Dr. Danis returned for fellowship training in Developmental and Behavioral Pediatrics at the University of California Los Angeles. Dr. Danis has also earned a Masters degree in Public Health from UCLA, with a specialization in Behavioral Sciences and Health Education. In addition to her clinical work, Dr. Danis continues to teach students at the graduate level, and is a regular contributor to conferences about children with special needs in the Southern California area and nationally. <top>

Ted Hutman, Ph.D.
Dr. Hutman is a clinical and developmental psychologist and an Assistant Professor in Psychiatry at the David Geffen School of Medicine at UCLA. He received a Bachelor’s and a Master’s degree in Modern Thought & Literature from Stanford University. After a stint as orchestra manager of the Los Angeles Philharmonic, he pursued doctoral and post-doctoral training in psychology at UCLA. Dr. Hutman is an investigator on a longitudinal study about the onset of autism during infancy, part of the NIH-funded Autism Center of Excellence at UCLA. He is the recipient of a career development award from the National Institute of Mental Health. His research interests include social-emotional and social-cognitive development, autism, and parenting. A licensed clinical psychologist, Dr. Hutman works closely with parents to foster the best possible developmental, educational, and mental health outcomes for their children. This work takes various forms.  In some cases, Dr. Hutman provides parents with tools to reduce children’s emotional and behavioral challenges. In other cases, he helps parents improve patterns of communication with their children in order to minimize conflict and bolster relationships. He works with couples to reconcile their different perspectives, to encourage collaboration, and to promote a healthy family environment in which children can thrive. Finally, Dr. Hutman provides psychotherapy for parents who are concerned about their ability to raise a child with social, emotional, or developmental challenges. Parents frequently experience ambivalence, despair, frustration, anxiety, and anger in the face of a child’s struggles. These parents benefit from the opportunity to consult with a psychologist who specializes in child development, family systems, and parenting. <top>

Matthew Hayutin, M.Ed.
Matthew earned his advanced Bachelor's degree from Occidental College in English and Comparative Literary Studies in 1992 and his Master of Arts in Education with high honors from Pepperdine University in 1997. He also pursued additional studies in English, film, and creative writing at the University of Pennsylvania, NYU and UCLA. Matthew began his career as an educational therapist in 1997, working privately with students of all ages and learning profiles. Matthew has extensive experience both as a classroom and home school teacher.  In addition to training and supervising our associates, Matthew still co-manages the company. Through his previous practice in educational therapy and college consulting, Matthew has cultivated key relationships with a wide variety of families, educators, administrators, therapists and other allied professionals.  He closed his private practice in 2014 to remain readily available to families for comprehensive intake meetings, educational consulting and ongoing clinical supervision of our associates. Matthew dedicates his daily ounce of free time to his wife and two children and still clings to his dream of publishing his Great American Novel. Hayutin & Associates is a full-service tutoring company for Kindergarten through college students, providing in-home academic support in Executive Functioning, subject tutoring, reading and math remediation, educational therapy, independent study, homeschooling and test prep.  Matthew is joined by his sister and business partner, Amy Hayutin Contreras, along with two Directors, Cherie Hines and Maya Varga. Together the Hayutin management team clinically supervises nearly 100 tutors and educational specialists.  While headquartered in Santa Monica, Hayutin has a deep pool of talented educators who serve families in Pasadena and surrounding communities. They are also happy to provide their services at the offices of Insight Collective. <top>


Chloe Willis, M.A. BCBA
Chloe Willis is a Board Certified Behavior Analyst and credentialed special education teacher. She develops and implements behavioral, communication and social skills targeting socially significant concerns in the home, school and community. Ms. Willis has extensive experience working with a wide range of developmental disorders. She implements a naturalistic approach to Applied Behavior Analysis. Applied Behavior Analysis (ABA) is a treatment approach, based on the principles of operant conditioning. ABA teaches functional skills in the natural environment and replaces undesirable or problem behaviors with more desirable or socially appropriate ones through positive or negative reinforcement.  <top>

Heidi Gunderson, LMFT
Heidi Gunderson is a licensed Marriage and Family Therapist and a Certified Mindfulness Facilitator based in Pasadena. She specializes in working with children, adolescents, and young adults, and she has extensive experience providing treatment for clients diagnosed with Autism Spectrum Disorder, ADHD, Disruptive Behavioral Disorders, Adjustment Disorders, and mood disorders such as depression and anxiety. In addition, Heidi has considerable experience working in a team model for those clients requiring an Individualized Education Program (IEP) or 504 Plan. Heidi also has been instrumental in developing curriculum and conducting ADHD and autism social skills programs and Mindfulness-based groups for children and their families. Lastly, Heidi also specializes in working with young people impacted by trauma, which may be in many forms as defined by the client. Heidi Gunderson attended Concordia College in Moorhead, Minnesota, and Pepperdine University in Malibu, California. She is a licensed Marriage and Family Therapist in California and Minnesota, and a UCLA Semel Institute Certified Mindfulness Facilitator. Heidi is a member of the California Association of Marriage and Family Therapists (CAMFT), American College Counseling Association (ACCA), National Eating Disorder Association (NEDA), and Psi Chi–The National Honor Society in Psychology. For more information, visit: Email: <top>

Insight Collective Offices

Our offices are located in the mezzanine of the 595 Colorado Building, at the corner of Colorado and Madison in Pasadena. The building dates from 1928 and is a beautiful architectural example with many turn-of-the-century details. It has been designated a Historical Landmark.