Meet The Team

Claire Dumke

Claire Dumke, Psy.D.

Dr. Claire Dumke is a Licensed Clinical Psychologist with over 10 years of experience working with children, adolescents and adults with Autism, Asperger's and other developmental disabilities. Dr. Dumke also treats clients with mood disorders, ADHD, trauma, behavioral issues and family issues.

Dr. Dumke received her BS in psychology from Colorado State University and holds both a masters and a Doctorate in Clinical Psychology with a focus on child and family studies from Alliant International University in Southern California.

Throughout her training and career, Dr. Dumke has worked with children and adolescents in residential treatment facilities and therapeutic group homes, as a Court Appointed Special Advocate (CASA) with children involved in dependency and neglect cases, as a psychotherapist at a mental health hospital in Southern California, as a counselor at a school for children and adolescents with mood disorders, learning disabilities, behavior problems, and Autism Spectrum Disorders, and was the covering psychologist for the Neuropsychiatric Special Care Unit at The Children’s Hospital for several years. Dr. Dumke has been in private practice in Denver since 2008.

Nancy Cason

Nancy Cason, Psy.D., BCBA

Dr. Nancy Cason is a Licensed Clinical Psychologist and Board Certified Behavior Analyst specializing in working with children, adolescents, and adults with Autism, Asperger's and other developmental disorders in Denver, Colorado.

She received her BA in psychology from the University of South Carolina in 1990, and then received her MA and Psy.D. in Clinical Psychology at the California School of Professional Psychology (1994; 1998).

Her professional experience includes work at residential therapeutic facilities, consultation to group homes and a day treatment program for adolescents and adults with Autism and other developmental disabilities. She helped to develop a school for children with Autism in Maui, Hawaii. Dr. Cason provided supervision of home and school based intensive Applied Behavior Analysis programs and was the Director of Family Services at the Center for Autism, Research, Evaluation and Service (CARES) in San Diego, California through 2004. She was also member of the multi-disciplinary diagnostic team at Creative Perspectives, Inc., in Englewood, Colorado from 2005 through 2009. Dr. Cason has provided clinical supervision to Masters and Doctoral Level therapists working with children with Autism. Dr. Cason has extensive experience in diagnosis, assessment, and treatment of Autism, Asperger's and other developmental disabilities.

Her professional accomplishments include publications as well as public speaking on topics related to Autism Spectrum Disorders. Dr. Cason has practiced in Denver since 2005.

Nettie Burke

Nettie Burke

Antoinette (Nettie) Burke is the Clinical Director of Therapy at Insights. She is a Licensed Professional Counselor (LPC) with more than 7 years of experience working with clients from a wide range of backgrounds, including children, adolescents, and adults with Autism, developmental disabilities, anxiety, depression, and trauma. Antoinette’s practice has utilized therapeutic modalities such as Cognitive Behavioral Therapy, Dialectical Behavioral Therapy, Trauma-Focused Cognitive Behavioral Therapy, and Applied Behavioral Analysis.

Antoinette received her undergraduate degree from the University of Colorado, Denver in psychology and received her master’s degree in clinical mental health from Adam’s State University.

Throughout her career, Antoinette has worked with children and adolescents on the Neuropsychiatric Special Care Unit at Children’s Hospital Colorado, as an outpatient therapist at Children’s Hospital Colorado, and with adults as an outpatient therapist at a community mental health center.

Antoinette is a Colorado Native and in her free time loves to travel with her husband, spend time in the mountains, and surround herself with family and friends.

Publication: “Autism Spectrum Disorder:  Effects on Child and Family Functioning” in the Journal of Student Research.

David Sherman

David Sherman

David Sherman is a Licensed Professional Counselor (LPC) with 5 years of experience. He has worked with children, adolescents, adults and families with diverse needs in various settings including hospital, residential, and outpatient care. David has worked with individuals with Autism Spectrum Disorders and other developmental disabilities, and enjoys working with individuals with ASD and their families to address emotional, behavioral and social communication needs.

David received his Professional Counseling MA from Lesley University in Cambridge, MA with a specialization in Expressive Arts Therapies. David combines therapeutic modalities such as CBT, solution focused therapy, and EMDR with expressive arts modalities like art, music and movement. 

Before becoming a therapist, David worked with farmers, chefs and the public as a sustainable food advocate. David is happy to have left NY winters behind to enjoy hiking and biking in CO. David is also a passionate visual and musical artist. 

Suzanne Knight

Suzanne Knight

Suzanne Knight is a Licensed Marriage, Family and Child Therapist (LMFT) with more than 30 years of experience working with clients from a wide range of backgrounds, including adults and children with various developmental disabilities. Suzanne’s practice has utilized a broad range of therapeutic modalities, including Cognitive Behavioral Therapy. 

Suzanne received her BA from the University of California at Los Angeles and her MA from Pacific Oaks College. 

Throughout her career, Suzanne has worked with children, adolescents, and adults, providing respite care and support in individual and group settings for victims of child abuse and clients with anxiety related to health issues. She was licensed as a special education teacher in California and has extensive experience with children and adults on the autism spectrum. During her early years of practice in Denver, Suzanne saw clients through Developmental Pathways and Denver Options, community-based agencies serving individuals with developmental disabilities/delays and their families. While on staff at Developmental Disabilities, she ran a therapeutic group for court-referred sex offenders previously diagnosed with Asperger’s.

Suzanne has lived in Denver for 25 years; she enjoys biking, playing with her two grandsons, hiking with her family, traveling with her husband and sitting on a quiet beach with a book. Suzanne received her BA from the University of California at Los Angeles and her MA from Pacific Oaks College.

Cassidy Brown

Cassidy Brown

Cassidy Brown is Insights’ full time office manager, without whom we would not be able to function! She is our clients first point of contact and handles all our scheduling, insurance questions, billing, and more.  She fields endless emails and phone calls and does it all with a smile on her face.  Cassidy is an indispensable and integral part of the Insights team and is excited to be able to utilize her diverse set of organizational and interpersonal skills to assist others in their therapeutic or diagnostic journey. She looks forward to talking with you!

Cassidy is an Oklahoma State University graduate with a Bachelor’s degree in human development and family science. She moved to Denver, Colorado in the summer of 2018 and is currently completing courses to obtain her Master’s degree in marriage and family therapy through an online program at Northcentral University. After graduation, Cassidy hopes to build her career as a marriage and family therapist to continue serving her community and bringing awareness to the need for accessible mental health services. 

Cassidy’s work history includes experience in working with children and adolescents. She was a summer school teacher in Oklahoma City, Oklahoma and held a child advocacy position during her summer internship program in Tulsa, Oklahoma. She also has 10+ years of experience in customer service through her retail management roles.

Scroll to Top