Our Team
Brittany Evans, MA, BCBA, COBA
Brittany is a Board Certified Behavior Analyst, with a Bachelor’s of Science in Psychology, and a Master’s of Arts in Applied Behavior Analysis. She has 12 years of experience working with individuals with a variety of special needs. Over the last 9 years she has been a BCBA specializing in Autism Spectrum Disorders.
Although she’s a native of Western Texas, she is now an independent BCBA providing ABA therapy to families and children in central Ohio. She is passionate about providing the highest level of therapy to her clients and passionate about her company, Lotus Behavior Analysis Therapy. We’re confident you’ll see a difference in the quality of therapy provided by Lotus and we look forward to speaking to you about providing exceptional individualized therapy to your child!
Michael Evans, BA
Michael holds a Bachelor of Arts in Criminology from The Ohio State University and brings with him a distinguished background in federal law enforcement that began in 2007. After a successful career culminating in his role as a Special Agent, Michael made a bold and purposeful shift in 2021, transitioning from federal service to the world of healthcare leadership.
Today, he serves as the Managing Director of Lotus Behavior Analysis Therapy, where his mission-driven mindset and strategic leadership guide the organization’s continued growth and impact. While proud of his accomplishments in public service, Michael finds deeper fulfillment in helping children and families thrive through the life-changing work being done at Lotus.
Alexis Clark, M.Ed., BCBA, COBA
A central Ohio native, Alexis is a Board Certified Behavior Analyst who graduated from Bowling Green State University with a Bachelor's of Science in Psychology and a Master's of Education in Applied Behavior Analysis. She began her journey as a Registered Behavior Technician near Toledo for three years before returning to her hometown of London, Ohio. Her number one goal is to deliver compassionate care and create a positive experience for all her clients and their families. Outside of work, Alexis loves going on walks with her dog, paddleboarding on the lake, and traveling to new places with her husband.
Tiffany Waltz, MA, BCBA, COBA
Tiffany Waltz is a Board Certified Behavior Analyst with over 17 years of experience in ABA and Autism. She has received her Bachelor’s of Arts in Psychology and a Master’s of Arts degree in ABA. Tiffany was introduced to ABA while working as a Behavior Technician. Tiffany has also been the Director of two Autism Centers. During the course of her career, she’s had the opportunity to work with a wide range of ages, as well as professionals in the field of education and ABA. Tiffany prides herself on always learning something new to better herself as a Behavior Analyst and providing helpful insights into the different needs of children. In her spare time, Tiffany enjoys spending time with her family out on the farm, as well as with her cat Jazsper.
Yeling “Yey” Zeng, MA, BCBA, COBA
Yey is a BCBA with a Bachelor’s of Science in Neuroscience and a Master's of Arts in Applied Behavior Analysis. She has been working as an RBT for the past 3 years in the Columbus area, specializing in Autism Spectrum Disorder. She aspires to be a proficient and passionate Board Certified Behavior Analyst while providing excellent services to individuals of various ages with developmental disabilities. During her free time, she enjoys playing with her cats, spending time with family and friends, and exploring new activities!
Kathryn “Kat” Diana, PMC, MSP, BCBA
Kat is a BCBA with a Bachelor’s of Arts in Sociology and Psychology, a Master's in sports psychology, and a Post-Master's certificate in applied behavior analysis. She is also getting a PhD in Couples and Family Therapy. Kat started her journey as a Student Analyst with Lotus and we’re excited to have her as our newest BCBA. Kat has four years of experience working with individuals with autism. In her free time, she loves watching sports, hiking, and hanging out with friends and family.
Daniel Baker, BA, GC, BCaBA, Lead Student Analyst
Daniel grew up in Petaluma, California. He moved to Ohio for his undergraduate studies at Ohio Wesleyan University, where he received his Bachelor’s degree in Psychology with minors in Sociology and Philosophy. He has also received his Master’s Certificate in ABA from Ball State University. Daniel is currently pursuing his Master’s degree in Clinical Mental Health Counseling from Walden University. His long-term goals are to receive his LPC licensure and BCBA certification following graduation and then work as a counselor and BCBA for children, teens, and young adults who have been diagnosed with behavioral health disorders. When not working, Daniel enjoys going on road trips, listening to live music, and playing with his dog.
Beth Janson, BA, MSFP, Student Analyst
Beth is a RBT who has a Bachelor’s of Arts in Psychology and a Master’s of Science in Forensic Psychology. She has 5 years of experience in the mental health field and has spent the last 5 years working with individuals with disabilities. Beth discovered the world of ABA 4 years ago, and she immediately fell in love with working with children with Autism. When providing ABA therapy, Beth loves to sing, dance, and create art, while encouraging creativity and joy with her client. In her spare time, Beth enjoys painting, tending to her plants, and spending time with her pets. Beth aspires to become a BCBA!
Caitlyn Messbarger, BS, Student Analyst
Caitlyn is an RBT from Thornville, Ohio. She graduated with a Bachelor’s degree in psychology and law studies from the University of Mississippi in May 2023, and has always had a profound calling to work with children. Through her experience at Lotus, she fell in love with the world of Applied Behavior Analysis, finding fulfillment in helping autistic individuals thrive. Caitlyn is currently pursuing a Master's in Applied Behavioral Analysis at Ball State University to become a Board Certified Behavior Analyst, and she is dedicated to making a positive impact in the lives of individuals with autism. In her free time, Caitlyn cherishes moments with family, friends, and, more specifically, her nieces and nephew.
Shelby Herrington, MS, Student Analyst
Shelby Herrington grew up in Whitehouse, Ohio. She graduated with a Bachelor’s in ABA from Ball State in 2023, and a Master’s in ABA from St. Joseph’s University in 2024. She is currently working towards becoming a BCBA. In addition to working in the field of ABA, Shelby is a soccer coach for both youth clubs and the Olympic Development Program. She has two pets that are her best buddies: a rabbit named Chewy and a mini pig named Hamlet. She loves travelling to new places, skiing, snorkeling, art, and spending time at her cottage in northern Michigan.
Erica Buck, BA, Student Analyst
Erica graduated with a Bachelor’s of Arts in Psychology with a Minor in Disability Studies from The Ohio State University. She is currently pursuing her Master’s degree in ABA from Ball State University. Erica has always had a passion to help people. She became a behavior technician to help make a difference in the lives of our clients and their familes. Erica aspires to obtain her master’s degree in a mental health related field. In her free time, she enjoys spending time with her friends & family, doing arts & crafts, and listening to Taylor Swift while relaxing with her two cats and hamster.
Reese Lytle, BA, Student Analyst
Reese grew up in Johnstown, Ohio and has a Bachelor’s degree in Psyhology. She has been an RBT since 2021 and has been in love with the field ever since then! She has worked in a variety of different settings, age groups, and disabilities. She started her Master’s degree in Applied Behavior Analysis in the fall of 2024 and plans to graduate in the spring of 2026. She hopes to become a BCBA and help children and families grow and reach their goals. Everyday, she is inspired by the children and their families, which motivates and excites her to move forward in her career to help!
Anthony Mullen, BA, RBT, Peer Mentor
Anthony graduated with a Bachelor’s of Arts degree in Psychology from The Ohio State University. At Ohio State, he found a passion for helping individuals clinically. Professionally, he strives to foster a constructive and accepting relationship with clients and promote psychological growth. Anthony aims to receive his doctorate in Psychology and LPC licensure. He has worked in ABA since May of 2024. In his free time, Anthony enjoys cooking, going for long runs, and watching movies.
Stephanie Kauff, BA, RBT
Stephanie grew up in Columbus, Ohio. She graduated from Bowling Green State University in 2019 with a Bachelor’s in Psychology, a minor in Neuroscience, and a focus in 3D art. She began working with children with developmental disabilities in high school as a volunteer teaching aid, and her career has been centered around advocacy and inclusion ever since. She plans on continuing her education in the near future. When she is not working, you'll find her doing art or out in nature.
Aleea Sexton, RBT
Aleea has been living in the Columbus area for about five years. She is originally from Seattle, Washington. For the past six months, Aleea has been working with children on the spectrum, and she is passionate about making a positive difference in their lives. She is excited to bring her skills and dedication to working with your child and supporting their growth and success. In her free time, Aleea enjoys reading a good book and listening to music.
Maddie Jennings, RBT
Maddie was born and raised in Ohio. She is currently a student at the Ohio State University for psychology and neuroscience. She wants to pursue a doctorate of psychology after finishing her undergraduate education! She has always had a passion for working with children and hopes to become a pediatric neuropsychologist in the future. She plans to spend my time as an RBT making a positive impact and spreading awareness. She is dedicated to helping others and gaining as much knowledge as possible. In her spare time she enjoys spending time with family and friends as well as traveling!
Brenna Berean, RBT
Brenna is originally from New York and came to Columbus to attend The Ohio State University. She will graduate in May 2025 with a Bachelor’s degree in criminology and psychology. Through her work with Lotus, Brenna hopes to gain experience in the psychological field. She also hopes to gain insight into the lives of clients to help better understand and enrich the lives of those with autism and their families. In the future, she hopes to continue her education and earn a Master’s degree. In her free time, she enjoys reading, spending time with friends, and her cat.
Swathi Patlori, BS, MS, RBT
Swathi is a Behavior Technician who earned her Master’s in Pharmacy from Rajiv Gandhi University of Health Sciences, Karnataka, India. With a passion for making a positive impact, she transitioned into the field of behavior analysis, where she works to improve the lives of clients and their families. Currently, she is pursuing a Master’s in Applied Behavior Analysis (ABA) at Ball State University to expand her expertise. Swathi is committed to advancing her career and aims to achieve her BCBA certification in the future, further enhancing her ability to help those in need. Outside of work, she enjoys spending time with her family and friends and tending to her garden.
Allen Rosal, RBT
Born and raised in Cincinnati, Ohio, Allen is a driven and compassionate fourth-year student at The Ohio State University, where he’s double-majoring in Psychology and Biology. With a deep commitment to mental health, Allen plans to pursue a Master of Science in Nursing (MSN) and become a licensed Psychiatric Nurse Practitioner—channeling his education and empathy into meaningful clinical care. At Lotus, Allen is dedicated to empowering clients through personalized, compassionate support that meets each individual where they are. His approach is rooted in understanding, respect, and a genuine desire to make a lasting difference.
Beyond his work and studies, Allen is a powerhouse of creativity—serving as the lead vocalist and choreographer for a nationally competitive a cappella group. When he’s not performing, he loves exploring new places and spending quality time with his friends and family.
Alec Hancox, RBT
Alec hails from the small town of New Waterford, Ohio, and made the move to Columbus two years ago in pursuit of the endless possibilities the city has to offer. With a heart for service and a strong work ethic, Alec is deeply committed to making a meaningful difference in the lives of children on the autism spectrum.
His passion lies in helping others embrace their most authentic selves, and he brings that same energy and dedication to his work every day. Alec’s journey with Lotus is fueled by the hope of creating lasting, positive change—and he’s just getting started. With plans to further his education, Alec is eager to expand his impact and continue empowering those around him.
Valerie Barrera, RBT
Valerie was born in Pennsylvania and raised in the heart of New Jersey, where her passion for working with children first took root. Before joining Lotus, she spent three years enriching young lives through an after-school program, fostering creativity, confidence, and connection. Driven by a desire to make a deeper, lasting impact, Valerie found her calling at Lotus, where she now dedicates her time to supporting children with autism through compassionate, meaningful work.
When not delivering amazing ABA therapy, Valerie is an avid photographer and nature enthusiast, often capturing the beauty of her hiking adventures through her lens. She’s also a devoted fan of all things music and film, and nothing brings her more joy than spending time with her beloved dog, Bucky.