Nathalie Spiesser Email & Phone Number.

Nathalie Spiesser is the Center Director at Ascend Autism’s Nashville, TN location. She holds a Master’s degree in Special Education from Penn State and has nearly two decades of experience working with children. Prior to becoming a BCBA, she spent three years as a Registered Behavior Technician, solidifying her understanding of ABA therapy and the day‑to‑da...