The Partners

Brian van Meerten M.Ed, BCBA, LBA


 Brian van Meerten is the Partner for Community Relations and Employee Well Being at Kaibab Behavioral Services. He has a background in teaching with an emphasis on inclusion and providing behavioral consulting services in the Medicaid system. Brian currently serves on Arizona ASD Advisory Committee to the Governor’s Counsel. Brian received his Master’s in Education from Northern Arizona University and Certificate of Positive Behavior Support through the Institute for Human Development. He is an Arizona licensed behavior analyst and Board Certified Behavior Analyst with a passion for training well rounded behavioral counselors and behavior analysts with an unpretentious perspective of the science of behavior change. Brian enjoys helping people through his profession and hiking, traveling and learning about various cultures with his family. 

Korina Callahan M.Ed, BCBA, LBA


  Korina Callahan is the Partner for Early Intervention and Positive Behavior Supports with a focus on Coconino County at Kaibab Behavioral Services.  She has over 15 years of experience in the field of education with a focus on special education.  Korina has a background in teaching students with special needs and coaching Positive Behavior Intervention Supports in pre-school through secondary education.  She has additional experience assisting individuals with socially significant behaviors.  She currently supervises early intensive interventions for children with Autism to assist with basic language learning skills.  Korina serves as a board member of Flagstaff Leadership Program.  Korina received her Master's in Education from Grand Canyon University and Applied Behavior Analysis certificate from Arizona State University.  She is an Arizona licensed behavior analyst and Board Certified Behavior Analyst.  Her passions focus on  training, coaching, evaluation, and sustainability of multi-tiered  systems of behavior support, specifically in early childhood.  Korina enjoys traveling and camping with her family while enjoying many activities in the great outdoors.  

Daniel Davidson, PhD, BCBA-D, LBA



Dr. Dan Davidson is the Partner of Parent and Caregiver Support at Kaibab Behavioral Services in Flagstaff, AZ. Dan has a wealth of experience conducting behavior training and consultation with families, schools, providers supporting persons with behavioral health needs and/or intellectual and developmental disabilities. He has worked in K-12 education, residential services, behavioral health services, universities, and in private consulting. He has served the field for almost 40 years as a direct support provider, school principal, residential services administrator, consultant, university instructor, advocate, behavioral health professional, and policy shaper. Throughout his career, he has been a tireless advocate for people who behave in challenging ways, as well as the parents, teachers and other caregivers, who do their best trying to support them.

Through his advocacy, his consultation, his students, and his example, Dan has translated research into practice for many parents, staff, teachers and other caregivers. He has helped them improve lives, reduce challenging behavior, strengthen relationships, and live up to their own highest expectations.