Getting Started

 Choose a Way to Contact Us!

What Happens Next?

  • Come in for an initial consultation 

  • Insurance specialist request authorization

  • Parents and child come in for an assessment 

  • Set up a welcome packet meeting 

  • Set up a parent training with your child’s future BCBA

  • Start receiving early intervention  


At ABS our goal is to make this process as easy as we can for the family waiting for therapy. ABS will be in contact with you during the whole process!  

ABA Therapy 

Choose the Most Convenient Location for Your Child's Therapy!

  • Clinic Based ABA Therapy

  • In-Home ABA Therapy

  • Combination of Clinic Based and In-Home ABA Therapy

Methods for our ReggioABA

Therapy Program Include:

  • Applied Behavior Analysis (ABA)

  • (DTT) Discrete Trial Training 

  • (NET) Natural Environment Training

  • Positive Behavior Support

  • Picture Exchange Communication System (PECS)



Autism Testing

Schedule an Appointment with Our Diagnostic Team Today!


Our In-House Autism Diagnostic Team includes licensed diagnostic evaluators and MD physicians who will work together with your family and primary care physicians.   

Children with autism often start to exhibit the most-obvious signs between one to three years old. Certain developmental delays that are associated with autism can be addressed even earlier.

If you suspect your child is showing signs please click below to take the FREE Online Autism Screening Questionnaire

Reggio ABA

World's First ReggioABA Clinic!


ReggioABA Therapy focuses on a NET environment with constant communication and collaboration in a ABA Therapy environment. Each child has a team of highly trained professionals working on their developmental needs. 


ABA has been endorsed by the CDC and US surgeon general. 


The Reggio Emilia Philosophy

  • Child-led curriculum: encouraging curiosity and imagination!

  • Natural Environment Teaching

  • Expression through 100 languages 

ReggioABA™ is a trademarked collaborative approach to better the individual needs of every child with Autism.

AB Spectrum General Contact Information

Phone: (314) 339-7732

Email: info@abspectrum.org

Fax: (636) 244-4914


Location: 14733 Clayton Rd Ballwin, Missouri​ 63011

Direct Line: 636-248-1395

Email: chesterfield@abspectrum.org

Weldon Spring in St. Charles

Location: 1030 Wolfrum Rd, Weldon Spring, MO 63304

Direct Line: (636) 445-4659

Email: stcharles@abspectrum.org


Clinic Hours: Monday-Friday 7:00am-5:30pm

Insurance Department Hours: 8:00am- 3:30pm

Administration Hours: 7:00am-4:00pm