Meet The Team

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.

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.

Shaina Holderness

Shaina Holderness is a Licensed Professional Counselor with over a decade of experience working with children, adolescents and adults with Autism, Intellectual Disabilities, mood disorders, ADHD and anxiety. She received her B.A. in psychology from the University of Northern Colorado and then obtained her M.A. in Community Counseling from Regis University.  She obtained her hours towards licensure through an internship working with outpatients at Children’s Hospital Colorado.  Shaina’s professional experience includes working in residential treatment facilities, collaborating with schools and community based programs and working as a Mental Health Counselor on the Neuropsychiatric Special Care Unit at Children’s Hospital Colorado.  While at Children’s Hospital, she provided direct care using Applied Behavioral Analysis techniques, provided outpatient therapy to children on the Autism Spectrum and provided parent support and collaboration to develop proactive strategies to assist within the home. 

Additionally, Shaina works collaboratively with the doctors at the Anschutz Medical Campus to research the impact that equine therapy has on individuals on the Autism Spectrum.

In her free time, Shaina enjoys spending time with her husband and two young children, listening to classical music, playing outside with her family and completing DIY projects around her home.

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, travelling with her husband and sitting on a quiet beach with a book.zanne received her BA from the University of California at Los Angeles and her MA from Pacific Oaks College.

Aimee Alcorn
Aimee S. Alcorn, LCSW

Aimee Alcorn is a Licensed Clinical Social Worker with over a decade of experience working with children and adolescents with Autism Spectrum Disorder, other developmental disabilities, ADHD, behavioral challenges, anxiety, depression, and trauma.  She received her Bachelor of Arts in Liberal Arts from the University of Northern Colorado in 2006 and then her Master of Social Work in 2012 from Colorado State University.  She earned her hours towards her Licensed Clinical Social Work (LCSW) during her time working at Children’s Hospital Colorado. 

Aimee’s professional experience includes seven years as a classroom teacher, both in the general and special education environment.  Following her time as a teacher, she spent nearly five years at Children’s Hospital Colorado working on the Neuropsychiatric Special Care Unit.  Throughout her experience as both a teacher and a social worker, Aimee has developed a unique and creative approach to treatment and utilizes a variety of methods for barrier reduction to ensure success in the community, at home, and in the classroom. 

In her free time, Aimee enjoys spending time with her family, being in the mountains, and doing crafts.  When she has time, she enjoys traveling to new places and learning about other cultures!

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