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BehaviorSpan Autism Services RBT's


About BehaviorSpan


BehaviorSpan was founded by J.J. Tomash, BCBA-D in Denver in 2015. Starting as a small company that provided ABA therapy to just a few clients, BehaviorSpan now has ABA centers in Aurora, Wheat Ridge, and Denver.

As our company has grown, our goal has stayed the same: to provide the most effective Applied Behavior Analysis (ABA) for children on the ABA spectrum possible. Our centers are joyful, fun, respectful, caring, and playful environments. We have carefully created environments to capture developmental opportunities for children to learn and grow, ensuring that the skills they learn help them in all environments of their life: current and future. This is the foundation that allows us to provide highly effective ABA therapy- which can most efficiently address the needs of children with autism.

The most important tool we have is our team. We love what we do. We respect and care for our clients, their families, and each other. We find joy in every accomplishment as we work and play alongside your child.

Along the same lines, BehaviorSpan is made up of a diverse group of individuals from different countries, races, beliefs, and faiths.  We embrace our diversity, and it makes us strong.  We will never discriminate against any individual based on their race, religion, sexual orientation, nationality, gender, sex, or beliefs.

RBT Direct Staff

Our direct care team of RBT's are the core component of our program. They diligently work every day to help our clients learn as much as possible.

Leadership Team

Founder & CEO

J.J. Tomash

CEO J.J. Tomash, Ph.D., BCBA-D

Center Lead

Katrina Brunette-Rudd

Center Lead Katrina Brunette-Rudd


Rachel Meyer

BCBA Rachel Meyer

Systems Analyst

Alex Eakins

Systems Analyst Alex Eakins

Founder & Clinical Director

Nicole Da Lima Leitao

Clinical Director Nicole Da Lima Leitao

Center Lead

Mackenzie Zimmerman

Center Lean Mackenzie Zimmerman


Victoria Conners

BCBA Victoria Connors

Operations Manager

Lynn Ward

Operations Manager Lynn Ward


Seidy Snyder

BCBA Seidy Snyder


Amy DeFusco

BCBA Amy DeFusco

Autism Applied Behavior Analysis and Early Learning

BehaviorSpan Autism Services Logo Graphic
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