Diagnosis can be scary. As parents of a child with Autism, we understand firsthand the anxiety that comes with learning your child is different.

From left to right: Brad, Susan and Max Fenton. Brad and Susan are the founders of Abacus Therapies

But different shouldn’t mean your child has to be misunderstood or alienated. And different certainly doesn’t mean they can’t live a full and rich life with warm and significant relationships.

Our own experience taught us that the heart of any autism therapy should be the child. Not the process. Not the diagnosis. Start with your child’s interests and build from there. Understand their specific needs. Create a window into how they see the world and build new skills and behaviors that are authentic to them. Our team is trained in a range of interdisciplinary therapies so we can build a customized approach that works for your child and your family.

We’ve been there. Let us help.

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Our Manifest


To offer best-in-class professionals using a child-led approach to autism therapy.


To support families like ours through diagnosis and beyond with personalized, professional care.


We understand that every diagnosis is different, so our team is trained in a combination of therapies to explore your child’s full and unique potential.

Meet the Abacus Team

Sep Niakan

Executive Director

Quadrilingual reformed tech nerd who loves funny movies, Asian food and all types of animals.  Dedicated father and husband doing good in the world.

Brad Fenton

Chief Relationship Officer
Dog loving catch and cook fisherman who enjoys mango season, jogging and cycling. Father and husband who is passionate about learning/teaching about Autism and helping children and families. 

Susan Cywiak

Parent Support and Training

Proud Native of Venezuela, Doctor of Pharmacy, loving wife and mother. Enjoys a nice vino tinto, connecting with other moms and promoting Autism awareness and acceptance.

Stephanie Bienstock

Client Care Manager

Native Floridian supermom of two, wife of one.  Enjoys real estate, a good cup of coffee and is dedicated to pairing families with quality therapists.

Sumner Flynn

Clinical Supervisor, Board Certified Behavior Analyst

Sumner has been certified as a BCBA since 2011. Her expertise includes verbal behavior, social skills development, and reduction of severe problem behaviors.

Natalie Schad


Upbeat Floridian transplant via California. Joyfully helping children reach their full potential since 2014 using an individualized and natural approach. Specializes in early intervention, verbal behavior and feeding therapy.

Sahar Dahsheh


Multi-lingual world citizen who believes that homogeneity is boring and whose calling in life is to constantly grow and help others do the same.

Roberta Costa

Health Insurance Coordinator

Beach lover,  spending time with family and friends makes everything better. Traveling and dancing keep her busy. Helping others is what it’s all about.  

Joy Ekele


Doctor of Medicine and Recruiter extraordinaire.  Loves traveling (especially to a nice body of water), music and a heart warming bowl of rice.  Anti-bullying advocacy is a passion.

Madeline Smith

Lead BCBA in NC

Traveler, Chili’s 2 for $20 fanatic, and lover of all things cheesecake. Alabama native who is passionate about creating trusting therapeutic relations and empowering others to reach their full potential.

Marixiel Desangles


A certified scuba diving, multilingual hypnotist.  Her meditation practice shows in her calm demeanor and warm smile.  In addition to helping children and families, she volunteers at a homeless shelter and is learning to play a mean guitar. 

Sara Galam

Training Coordinator

Trilingual (Spanish/Hebrew/English) mom of two teen boys who loves working with kids. Made in Venezuela. Enjoys cooking for friends and family for dinner, drinks and off-key Karaoke.

Susel Riera


Enjoys traveling, board games and wine paired with stinky cheeses.  Sees life through rose-colored glasses. Believer in diversity and helping families in their unique journeys.  

Do you have any more questions?

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