Brandon T. Gann, MS, BCBA, LBA

Brandon Gann joins Play Works Children’s Therapies as the Director of Behavioral Health. Brandon is a licensed behavior analyst working with developmental pediatric populations with specialization with those impacted by ASD, ADHD, ODD, ID, and severe behavior disorders. Brandon received his undergraduate degree from Montana State University Billings in Elementary Education and Special Education and Master’s degree in applied behavior analysis from Montana State University Billings.  He is currently working on his Ph.D. in applied behavior analysis with a research focus on adolescent social responsiveness. Brandon has extensive training and experience in verbal behavior analysis and natural environment teaching, with expertise in functional behavior analysis and functional communication training.


Ella Campbell, BS, RBT

Ella earned her undergraduate degree in Public Health from Northern Arizona University. Prior to joining the Play Works team, she had the excellent opportunity to assist in teaching English to 3-12 year-olds in Spain. Her time abroad inspired her to continue working with children upon her return to the States. She is thrilled to be working at Play Works as a Behavior Interventionist! When she is not working with children and families, she enjoys spending time in the outdoors, drinking coffee, reading books, and hanging out with her friends and family.

Callie Holgate, BA, RBT

Callie is a bilingual behavior technician at Play Works Children’s Therapies. She attended the University of Puget Sound where she received her Bachelor of Arts in both Psychology and Spanish Language, Literature, and Culture. She has volunteered at Portland Public Schools and has worked with the Boys and Girls Club of Portland. Outside of Play Works, Callie coaches for the Hood River Valley High School girls lacrosse team. She enjoys partaking in a variety of sports and loves being in the outdoors. Callie is beyond excited to work within the supportive community that is Play Works and to assist the greater community of the gorge.


Mattie Back, RBT

Mattie is a bilingual behavior technician with Play Works Children’s Therapies. She is currently attending Columbia Gorge Community College and finishing her associate's degree of Arts in Oregon transfer. After which, she will transfer to a four-year university to earn her bachelor's degree of arts in psychology. She has always had a passion for psychology and working with children. She is extremely excited to have the chance to work with and learn from such an amazing group of people. Outside of work, Mattie enjoys participating in archery competitions and playing soccer, baseball, and tennis with her nieces and nephew.