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OUR TALENTED TEAM

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Christina Rizzo Tatreau, MFA, BCBA, LABA

Owner/CEO 
Program Director of the Tate Learning Center

Christina founded Tate Behavioral in 2013 with the goal of bringing high-quality in-home and school-based ABA services to Western MA. After supporting individuals of all ages and abilities for over 16 years, Christina currently oversees the day-to-day operations of Tate Behavioral and is the Program Director for the Tate Learning Center. Christina holds a BA from Clark University, an MFA from Bennington College, and completed her coursework in Applied Behavior Analysis at Florida Institute of Technology. A former writer, her clinical passions are Applied Verbal Behavior, social skills instruction, and schedules of reinforcement. She enjoys running, cooking, gardening, and spending time with her family. Christina received a spot on the Forbes NEXT1000 2021 list, a designation honoring small business entrepreneurs redefining the American dream. 

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Erica Nason, M.A., BCBA, LABA

Clinical Director of Vocational Programming

Erica earned a B.A. in Psychology and a M.A. in Applied Behavior Analysis from Westfield State University. She then became a Board Certified Behavior Analyst and received her License in Applied Behavior Analysis. Since 2010 she has worked with clients with Autism, social/emotional disorders, or other developmental disabilities, that display challenging behavior in the school and home setting. She has worked training families and after school program staff on implementing programs and procedures in applied behavior analysis. Additionally she has participated in and run social skills groups within schools and after school programs. Her passion includes bridging the gap between school-aged children and adults to ensure clients are able to reach their full adult independent potential. She is currently working on developing Vocational Skills and Adult Life Skills programming for Tate Behavioral.
Beyond Erica’s passion for ABA, Erica cares deeply about social and environmental justice. She loves music, dance, and comedy.

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Abby Wellspeak, M.A., BCBA, LABA

Clinical Director of In Home ABA

Abby Wellspeak is the Director of the Tate At Home division of Tate Behavioral. With more than 10 years of experience in the field of ABA, she is our resident expert on all things insurance-related, including writing treatment plans and working to secure funding for home programs. She also works in homes training parents and supervising future BCBAs.
Abby has been providing ABA services to families and individuals with disabilities in homes, residential settings, and public and private schools throughout Western Massachusetts since 2008. Abby graduated with a Master’s in Applied Behavior Analysis from Westfield State University in 2013 and has been a Board Certified Behavior Analyst and Licensed Behavior Analyst since 2014.
One of her passions is working directly with families to help integrate her clients into their community, through doctor's appointments, dance classes, and family vacations. Outside of the office, Abby is most likely to be found spending time with her son “PJ”, sipping on iced coffee, or conquering any board game challenge.

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John Lempart

Director of Special Education 
Tate Learning Center
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Tony Watt, BCBA, LABA

Assistant Clinical Director
Tate Learning Center
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Emily Croteau, MS, BCBA, LABA

Senior BCBA Supervisor 
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Andrew Steplar, MA, BCBA

BCBA Consultant
Tate Learning Center
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Nicole Bosse, BCBA

BCBA Supervisor
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Callye Murphy-Mancini

BCBA Supervisor
Tate Learning Center
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Chelsea Mascari, BCBA

BCBA Consultant
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Nerissa Hall, PhD. CCC-SLP

Co-Director of Speech Language and Literacy
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Hillary Jellison, MS, CCC-SLP

Co-Director of Speech Language and Literacy
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Sarah Laushance

Co-Coordinator Tate Community Programming
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Zack Mullane

Co-Coordinator Tate Community Programming
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Marissa Yeager, RBT

Special Education Teacher
Tate Learning Center
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Maya Close-Barber

Special Education Teacher
Tate Learning Center
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Melanie Blood

Special Education Teacher
Tate Learning Center
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Alison Stitsinger

Clinical Resident
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Emily Donoghue, MA, CCC-SLP

Speech Language Pathologist
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Julia Serra

Speech Language Clinical Fellow
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Michele Yeager

Human Resources Specialist
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Tiara Warren

Office Manager
Tate Learning Center
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Jose Espada

Building Manager
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Sara Harvey, PT

Physical Therapist
Tate Learning Center
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Heather Castonguay

Clinical Resident
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Diane Cashman

Clinical Resident
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Sydney Boden

Clinical Resident
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Nathan Edwards

Clinical Resident
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Paige Dickinson

Clinical Resident
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Brittany Sourdiffe

Clinical Resident
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Amanda Wyckoff

Lead Learning Coach
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Rachel Guerin

Learning Coach
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Anthony Rizzo

Learning Coach
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Erika Flannery

Learning Coach
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Marc Ruffin

Learning Coach
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Alexis Farrington

Learning Coach
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Anna Bilotti

Learning Coach
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Michael Housey

Learning Coach
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Thomas Anderson

Learning Coach
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Brionna Givens

Learning Coach
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Christine Gould

Occupational Therapy Assistant
Learning Coach
Tate Learning Center
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Kelly Pytel

Learning Coach
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Beth Stebbins

Learning Coach
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Nicole Aponte

Learning Coach
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Debbie MacDonald

Learning Coach
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Krysa Boyce

Learning Coach
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Caitlin Odell

Learning Coach
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