Adminstration

Korina Callahan M.Ed, BCBA, LBA, Owner

Korina, owner and founder of Kaibab brings nearly two decades of dedicated experience to the field of education, specializing in special education. With a strong foundation in teaching students with special needs and coaching Positive Behavior Intervention Supports from early childhood to secondary education, Korina has also excelled in assisting individuals with socially significant behaviors.

Currently overseeing early intensive interventions for children with Autism, focusing on fundamental language learning skills, Korina's leadership extends beyond her professional roles. She served as the past President of the Flagstaff Leadership Program and currently holds the position of President at Forging Youth Resilience. Korina is also the founder of Rising Mountain Academy, a microschool catering to students in Northern Arizona with disabilities.

Korina holds a Master's in Education from Grand Canyon University and an Applied Behavior Analysis certificate from Arizona State University. She is a licensed behavior analyst in Arizona and a Board Certified Behavior Analyst. Her expertise lies in training, coaching, evaluation, and sustainability of multi-tiered systems of behavior support, particularly in early childhood. Certified to train individuals in practice-based coaching and Pyramid Model Preschool Modules.

Away from her professional endeavors, Korina finds joy in traveling and camping with her family, indulging in various outdoor activities.

Christen C., B.A., General Manager

Korina Callahan M.Ed, BCBA, LBA, Owner

Christen is a management professional with a degree in psychology and a passion for personal development. Having previously spent over 7 years as the Director of Operations at a marketing agency, Christen brings to Kaibab a wealth of knowledge and experience in project management, people and system operations, human resources, business planning, marketing, and leadership.In her personal time, Christen shares a home in Indiana with 2 rescue dogs, Sadie (American Bulldog) & Chessie (Pitbull/Shih tzu mix). She loves to wind down with a challenging jigsaw puzzle while indulging in reality TV or a new documentary.

Emily C., B.S., Operations Manager

Born and raised in Yuma, Emily spent her childhood raising & selling livestock, and swimming & reading as much as humanly possible. She graduated from NAU in 2015 with a degree in Parks and Recreation Management. In 2015 she took a chance on an administrative position at the Flagstaff Public Library and started her career in Public Administration. After 6 years, she left for Court Administration at Coconino Superior Court. She has 8+ years of professional administrative experience including payroll management, grant funding oversight, facilities management, and internship program supervision. In her free time, she enjoys kayaking, being with friends and family, spending time with her pets, hiking, reading, learning ASL, and gardening.

Kyle B., B.A., Admin Assistant

Emily C., B.S., Operations Manager

Kyle has spent his career exploring roles in customer service and healthcare. In 2023, he earned a BA degree in philosophy from Northern Arizona University. Currently, Kyle is pursuing a master’s degree in legal studies with an emphasis in contract management from Arizona State University. Kyle is passionate about law and how it applies to business operations. In his free time, Kyle enjoys being creative and spending time with family.

Behavior Analysts

Julie D., BCBA, LBA

Isabela S., BCBA, LBA

Julie has been working in the field of Applied Behavior Analysis since 2000 and has been working for Kaibab Behavioral Services since 2018. She is a Board Certified Behavior Analyst and holds a Master's Degree in Early Childhood Education from Northern Arizona University (2002). Julie has experience implementing and supervising early intensive behavior intervention programs for children with autism and related communication disorders, home-based behavioral health services implementing function-based interventions addressing behavioral challenges and providing parent training, and school-based behavior analysis services conducting functional behavior assessments and developing 3-tiered systems of schoolwide positive behavior interventions and supports.

Isabela S., BCBA, LBA

Isabela Santos is a compassionate Behavior Analyst at Kaibab Behavioral Services. She received her Master’s in Behavior Analysis Practice from Florida Institute of Technology. She has an eight-year son on the spectrum who inspired her to switch careers, become very passionate about ABA, and grow her determination to help change the lives of the families she serves.With over four years of experience in ABA facilitating behavior change in clients ages 2-21, she produced intervention plans that have developed and increased her clients’ communication skills, daily living skills, and ability to live more independently.She believes in advocating for trying to understand neurodiversity, supporting our clients in increasing their autonomy, and helping them live fulfilling and happy lives.Isabela loves animals, school supplies and writing notes. She also enjoys running, reading, hiking, traveling, and spending time with her family and friends.

Louise Y., BCBA

Isabela S., BCBA, LBA

Louise Y., BCBA

Louise will begin with us in January and we can't wait!

Behavior Technicians

Tarah E., M.Ed., RBT

Tarah is a Registered Behavior Technician. Tarah earned a masters degree in Special Education and Applied Behavior Analysis in 2022 at ASU. She is currently studying for her BCBA exam hopes to hold the BCBA title before 2025. She has 10 years of experience in the field of education. She has a love and a passion for helping children and helping teachers be successful in the classroom. In her free time, Tarah enjoys reading, spending time with family, and being in nature.

Robbie W., B.S., BHT

Tarah E., M.Ed., RBT

Robbie is a behavioral therapist with Kaibab Behavioral Services. He graduated from Northern Arizona University in 2017 with a B.S. in Interdisciplinary Studies focusing on Speech-Language Sciences. He has 5 years experience in the field of Special Education and is currently pursuing a master’s in Applied Behavior Analysis through ASU, on the way to eventually becoming a BCBA. He has previously worked as a paraprofessional and a Speech-Language Pathologist Assistant with the Flagstaff Unified School District. Robbie enjoys time outdoors hiking, running, camping, and kayaking. He has played drums since he was 15 and enjoys spending time with his family, including his 6 pets.

Adele Z., RHT

Tarah E., M.Ed., RBT

Adele Z., RHT

Adele is attending Northern Arizona University to pursue a degree in Psychology with an emphasis in developmental psychology. She has years of experience as a direct support professional and provides attendant care, respite, and habilitation services. Adele also has experience as a teacher’s aide and provides behavioral skills for children with disabilities. She strives to become a Board Certified Behavior Analyst and enjoys gardening, ceramics, and reading outside in her hammock.

Emi R., RBT

Jayden V., B.A., BHT

Adele Z., RHT

Emi is working towards degrees in Social Work and Cello Performance at Northern Arizona University. She has years of experience working as an assistant teacher and holding leadership positions within orchestras across the country.

Emi is very passionate about approaching every situation with empathy, curiosity, and meeting every individual where they are.

In her free time, she enjoys performing as a musician, hiking with her cat, embroidery, photography, and exploring new coffee shops.

Marcel K., BHT

Jayden V., B.A., BHT

Marcel is originally from Poland where he spent his formative years until the age of 7. In 2005, his family embarked on a new chapter, relocating to the bustling city of Chicago. Immersed in the vibrant culture and rich diversity of the city, Marcel embraced the opportunities it offered, soaking in the cuisine, art, and myriad of experiences.

Marcel cultivated a deep appreciation for community and connection which in 2020 led him to moving to Prescott and pursuing a career in mental and behavioral health focusing on addiction. With a compassionate heart and a keen understanding of human nature he has dedicated himself to supporting individuals facing various challenges, striving to be a beacon of hope in their lives.

Marcel is very passionate about meeting others where they are and approaching every interaction with care, understanding, and empathy. In his free time, he enjoys exploring new places outdoors and traveling, trying new restaurants and spending time with his loved ones.

Jayden V., B.A., BHT

My name is Jayden, and I am from Safford, Arizona. I moved to Flagstaff in 2021 to attend Northern Arizona University. I recently graduated with my B.A. in psychology and have been accepted into NAU's graduate program for Clinical Mental Health Counseling where I will achieve my master's degree.

I have always had a passion for helping people which led me to a job with AmeriCorps where I gained a sense of community and was able to turn my passion into a job. I learned to help students and meet their individual needs. After graduate school, I plan to pursue a career that continues to allow me to help others and serve my community, whether that be a RBT, BCBA, or Licensed Counselor.

Outside of work and school, I enjoy paddleboarding, hiking, fishing, and playing with my dog!

Sidney F., M.A., RBT

Sidney is a Registered Behavior Technician with four years of hands-on experience in the field of Applied Behavior Analysis. Sidney graduated from Arizona State University with a master’s degree in special education with a focus in applied behavior analysis and is currently studying for the BCBA exam. Sidney is passionate about working with kids with varying disabilities and spends time during the winter working with an adaptive sports program as a ski and snowboard instructor. When not working, Sidney finds joy in snowboarding, yoga, and spending time with her husband and rescue pup, Oakley.

She is excited to continue making a positive impact in the field of ABA, all while embracing the adventures that come with both her career and her love for the outdoors.

Celene C., BHT

Sidney F., M.A., RBT

My name is Celene, and I’m originally from Tucson, though, I’ve lived in Flagstaff for the past 6 years! I came here to go to NAU and study social work, but I soon found working in the mental health field is where I want to be. I have years of experience in rehabilitation, inpatient behavioral health care, and many volunteering events to help my community. Prior to being at Kaibab, I worked in a psychiatric hospital, where my passion for helping people grew. It’s always been important to me to meet any situation with an open mind, empathy, and compassion. Working with people to enhance their quality of life- to become the best versions of themselves brings me lots of joy. When I’m not at work, I love to travel, hike, go to concerts, and hang out with my friends! Better yet, my favorite thing to do is explore Flagstaff with my dog (and best friend) Genevieve!