GBS, LLC Autism Therapy and Resource Centers

S.A.S.S.Y: Williamsport Parent Support Group

  • Meetings on the first Thursday of the month, 5:30-6:30
  • Childcare and food provided (please register at, social opportunities, speakers, etc.
  • Don’t miss out on this monthly opportunity!! Meetings are held at the UPMC offices in the Loyal Plaza (between Hobby Lobby and Giant) on W. 3rd Street. Look for the purple UPMC sign!

Social Skills Therapeutic Sessions! Starting Summer 2023.

Registering NOW : Registration due (all materials) by April 17, 2023

(use QR code for referral packet)

Enrolling in our Williamsport and Lewisburg Centers now.

GBS is now accepting Medicaid/MA insurance in Lycoming-Clinton Counties as well as many commercial insurances.

Lewisburg Center is also accepting Medicaid/MA and many commercial insurances.

Centers located in Lycoming and Union Counties.

Lycoming Center located at 138 Catawissa Avenue, Williamsport PA

Union Center located at 1722 West Market Street, Suite 4, Lewisburg PA

Accepting clients in Union and Lycoming County centers. To enroll, please see our “parent and guardian” tab.

Hiring at both centers. For more information, please see our “employment” tab.

Currently no waiting list, seats available in both locations. Sessions are Mon-Thurs, 9-2pm.

What happens at GBS?:

  • Intensive 1:1 ABA therapy
  • Young children with Autism to learn to socialize and communicate
  • Fun, compassionate, interactive environment with staff that care about YOUR child
  • BCBA-D supervises therapy provided by Registered Behavior Technicians (RBTs)
  • Data is driven with objective goals based on individualized assessment
  • Licensed as an IBHS in PA

What does not happen :

  • Counseling
  • Preschool or Daycare
  • Transportation Services
  • Free play all day
  • Nap times

GBS Mission Statement:

At GBS, it is our mission to provide a fun, engaging, therapeutic environment

for children with autism to thrive, grow and expand their independence

in addition to supporting families and providing community outreach programs.

Center Based Sessions are held Monday through Thursday, 9am-2pm.  Intensive ABA with Verbal Behavior Approach… our focus is on increasing your child’s communication, socialization, and play skills while reducing problem behaviors in a fun, safe, supportive environment. We mix instructional time with circle, facilitated play, art, sensory activities, snack, and various other pre-kindergarten skill based activities.

GBS has some of the most highly trained, highly qualified Registered Behavior Technicians in the area providing 1:1 therapy for your child. Supervision by a doctorate level Board Certified Behavior Analyst.

A few words from our interns, staff and past parents…

GBS is an amazing therapy center. So many great things happen once you step foot in the building. The staff have amazing relationships with the clients, which makes for great outcomes and progress for these kiddos. The children that are involved with GBS make such great progress, and so quickly. I would recommend services at GBS for any kid who is on the Autism spectrum!” – employee

“GBS shows professionalism and strives for excellence. All staff are kind and work positively with every client. I enjoyed interning at GBS and learned a lot from my experience. I highly recommend GBS.” – intern

GBS is full of positive staff for the children there and they do everything they can to help each child grow. Everyone is different and they use methods that work specifically for each individual during one on one therapy time. GBS is for the kids and they are only going to get better at what they do!” – past parent

I know GBS will be exactly where he needs to be to continue to grow. I’m so thankful for it!” – past parent


New Client Information (please review parent page for the process and forms prior to emailing):


Internship and Pathways to Careers Opportunities:

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