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 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 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 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.

Carolyn Black

Carolyn Black, Psy.D., LPC, Postdoc Associate

Dr. Carolyn Black is a Licensed Professional Counselor and Psychologist Candidate. She enjoys working with, advocating for, and embracing neurodiversity, LGBTQ+ communities, forensic populations, and intersectional multiculturalism in all of its forms.

Dr. Black received her BS in Psychology and BS in Criminology (with a Minor in Computer Science) from Florida State University. She then received her MA in Forensic Psychology followed by her PsyD in Clinical Psychology (with a specialty in Therapeutic Assessment) from the University of Denver Graduate School of Professional Psychology. 

Originally from Miami, Florida, Dr. Black has worked within the Denver, Colorado community since 2016 in a wide variety of settings, including the legal system, private practices, therapeutic communities, and community mental health agencies. She has worked behind the scenes of clinics assisting with grant management, billing, and training, while simultaneously working as a clinician facilitating individual therapy, couples therapy, and evaluations. She has also been part of an interdisciplinary research team whose findings are moving towards publication, and she has presented at international conferences. 

Dr. Black loves cooking, the Internet, the outdoors, gaming, and her (very photogenic) pets: a dog named Raiden, a cat named Rex, and a ball python named Autumn.

Martha Bautist-Biddle

Martha Bautista-Biddle, Psy.D., Postdoc Associate

Dr. Bautista-Biddle is a Psychologist Candidate and Postdoctoral Fellow at Insights Colorado Assessment and Therapy. Her professional passions include relational therapy, assessment, and group therapy with neurodiverse and LGBTQ+ communities. She has been trained in working with ASD, ADHD, personality disorders, OCD, and eating disorders. 

Dr. Bautista-Biddle received her BAs in Psychology and Gender Studies at Smith College in 2016. She obtained her PsyD at the University of Denver Graduate School of Professional Psychology in 2022, with a specialty in couples and family therapy. 

Dr. Bautista-Biddle's professional experience has included exposure and response prevention, relational school counseling, community mental health, and program development. Prior to completing her internship, Dr. Bautista-Biddle was an extern at Insights, where she was trained in ADOS-2 administration, administered and interpreted assessment measures, and assisted in report writing, editing, and supervision; she is thrilled to be returning! Dr. Bautista-Biddle completed her predoctoral internship at Kaiser Permanente Colorado, providing therapy and WPATH assessments to members of the transgender/nonbinary community. 

Dr. Bautista-Biddle is passionate about partnering with, fostering connections with, and making a difference in the lives of the individuals, couples, and families she works with. She is especially passionate about helping adults feel confident in who they are, what they are experiencing, and the resources available to them that can help them thrive. Dr. Bautista-Biddle lives in Denver with her wife and their dog Theo and cat Mochi, and enjoys hiking, crafting, and baking. 

David Sherman

David Sherman, LPC

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. 

kayla mccreadie

Kayla McCreadie, MA

Kayla McCreadie is a school psychology doctoral student at the University of Denver (DU), and is one of our doctoral externs at Insights, Colorado Assessment and Therapy. Kayla received her BS in psychology with a neuroscience focus and a minor in sociology from the Pennsylvania State University. She then received her MA in school psychology from the DU.

Kayla has worked as a full-time research technician at Penn State where she studied self-regulation strategies in young children. She has also worked in a variety of schools serving children and adolescents with autism, learning disabilities, and mood disorders, as a habilitation service provider for adults with intellectual disabilities Additionally, Kayla has been a researcher on teams studying children’s use of mathematical strategies and the effectiveness of small group reading interventions. Kayla is currently the graduate clinical supervisor at the University of Denver’s Counseling and Educational Services Clinic where she supervises graduate students in conducting psychoeducational evaluations. She is interested in how to best provide services and improve outcomes for individuals with intellectual and developmental disabilities.

In her free time, Kayla enjoys interval/circuit training, roller skating, aerial arts, dance, and playing with her cat, Ludo.

Rachel Webster

Rachel Webster, MA

Rachel Webster is a third-year Ph.D. student in the School Psychology program at the University of Denver, and is currently one of our doctoral trainees. Her research interests include increasing positive outcomes for individuals with intellectual disabilities through early intervention. Rachel received her MA in School Psychology from the University of Denver and her BA from the College of Idaho. Her Bachelor's degree is in Psychology and Religious Studies.  

Before moving to Denver in 2020 and starting graduate school, Rachel was a behavioral and habilitative interventionist for children on the autism spectrum and other developmental disabilities. She thoroughly enjoyed working with children, educators, and families to provide effective interventions within the home, school, and community setting. After graduation, Rachel hopes to work in private practice while also consulting with schools. In her free time, she loves to hike with her border collie Olive and chip away at wedding planning with her fiancé.  

Abbi Herrold

Abbi Herrold, MA

Abbi Herrold (She/Her/Hers) is a 4th year PsyD student at the University of Denver and is currently one of our doctoral trainees. Abbi graduated from Purdue University in 2019 with her B.S. in Psychology, with minors in Human Development & Family Studies, Law & Society, and LGBTQ Studies and earned her Masters of Arts in Psychology from the University of Denver in 2022. She is passionate about working with neurodiversity, grief and loss, young adults, and the LGBTQ+ community. Since moving to Denver in 2019, Abbi has worked in community mental health, college counseling, private practice, and the emergency department. Abbi strives to meet people where they are in the assessment process. She hopes that psychological evaluation will increase clients' access to services and supports as well as help them enrich their understanding of themselves.

In her free time Abbi enjoys finding new coffee shops, listening to music, and spending time with her dog Misha. After her doctoral training, she hopes to return to the Midwest and provide accessible services to her community.

Molly Zall

Molly Zall, MS

Molly Zall is a first-year doctoral student at the University of Denver Graduate School of Professional Psychology and is part of the doctoral trainee program at Insights. She received her undergraduate degree in psychology from the University of Denver and her master's degree in special education from the University of Wisconsin- Madison. Throughout her training and career, Molly has worked as a special education teacher in the public school system. She has experience working with children and adolescents with Autism and other developmental, emotional, and learning disorders in an education setting. She has extensive experience with the special education process. When Molly is not studying or working, she enjoys cooking and spending time outdoors with her dog, DJ.  
Emily Johnson

Emily Johnson, MPH

Emily Johnson is a first-year doctoral student at the University of Denver Graduate School of Professional Psychology and is part of the doctoral trainee program at Insights. Emily enjoys working at the intersection of mental and physical health, specifically working with communities who have traditionally been marginalized by our healthcare systems. Emily received her undergraduate degree in psychology (with a minor in sociology) from Occidental College in 2015. After college, Emily worked at Stanford University’s School of Medicine investigating neurodegenerative diseases and working with chronic pain patients. This research experience strengthened Emily's passion around multidisciplinary care and also pushed Emily to seek more client-facing roles. Emily comes to Insights after working at a children’s community mental health clinic for the past two and a half years. In 2022, Emily graduated with her Master’s in Public Health from University of Southern California in hopes of bringing the public health lens to her work in mental health care. In her spare time, Emily enjoys running (although she is still getting used to Colorado’s elevation), reading, and cooking. 
Cassidy Brown

Cassidy Brown, Office Manager

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.

Shenel Smock

Shenel Smock, Administrative Staff

Shenel Smock is an integral part of our administrative office team at Insights.  She assists in managing all office affairs, including scheduling, interfacing with clients over the phone and online, and billing/verifying benefits and is one of clients first point of contact.  Shenel is enthusiastic about her work and takes pride in all it entails. She lives by the motto “bloom where you are planted” by Saint Francis de Sales and is passionate about helping others, especially those in underserved and marginalized communities.

Shenel is a Syracuse University graduate with a Bachelor’s degree in psychology. She was born and raised on the beautiful Caribbean island of St. Kitts, where she worked as a teacher and guidance counselor for more than ten years. She moved to Denver in 2018 with her husband and two daughters and is pursuing her Master’s degree in clinical psychology at Capella University. In the future, Shenel hopes to work in the clinical field as a therapist and open a practice back in St. Kitts as a way to give back to her people.

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