# Marissa Williamson, BCBA

> ABA therapy · Thousand Oaks. Applied behavior analysis from a practice of board certified behavior analysts based in Thousand Oaks.
- Ages: Up to age 21
- Price: ask the provider
- Where: near Thousand Oaks (exact address not listed)
- Phone: (877) 262-9133
- On Summerground: https://summerground.com/thousand-oaks/marissa-williamson-bcba

## ABA therapy

Up to age 21

Applied behavior analysis (ABA) provided by a practice of board certified behavior analysts (BCBAs) in Thousand Oaks, in the Conejo Valley area of Ventura County, close to the northwest edge of Los Angeles County. The registry lists four BCBAs with the practice: Marissa Williamson, Shannon Duncan, Laura Dodds and Brian Rice. ABA is generally used to build communication, daily living and social skills and to reduce challenging behavior in children with autism and other developmental differences. The practice is based at 100 E Thousand Oaks Blvd, Suite 228, and can be reached at (877) 262-9133. Ages served are listed as children and teens up to 21.

## About Marissa Williamson, BCBA

A behavior analysis practice in Thousand Oaks listed in the national provider registry (NPPES) under Marissa Williamson, BCBA. Three other board certified behavior analysts are listed with the practice: Shannon Duncan, Laura Dodds and Brian Rice.

Details from NPPES NPI registry, September 2026, checked October 12, 2026. Confirm prices and dates with the provider before signing up.