Who are we?

ABA Center International (ACI) is an international ABA organization, filled with passion to help all the clients that come to us. We currently are able to provide ABA services in the Netherlands, and in the USA (Utah). ACI is led by the directors Jennifer Niemeijer and Lilyan W.J. Campbell who are both Board Certified Behavior Analysts with over 15 years of experience in ABA in both the USA and the Netherlands.

Lilyan is a BCBA and licensed psychotherapist. She has 20+ years of experience working with individuals, couples, and families in Europe and the USA. Lilyan is also Clinical Director of ABA Works in the USA. She speaks at ABA conferences, develops ABA training courses, and enjoys developing and implementing Organizational Behavior Management (OBM) strategies. She is a mother of 2 amazing sons. Her passion can be seen when she helps her clients and her entire team to achieve goals. 

Jennifer is a BCBA and BIG registered nurse. She has 20+ years of experience in working in the pediatric health care field and 18+ years of experience in caring for children and adults with developmental delays. Furthermore, she has personal experience as a mother of four adult children with various diagnoses at a young age. All the children have acquired more than one diploma. Two of the oldest have a job, a relationship, and live independently. The youngest two are still studying and one of the two lives independently.

We are a multidisciplinary team, with an important common denominator: Enthusiasm, quality, and professionalism!

Because we often provide outpatient care, we also work in Groningen, Flevoland and Noord-Holland. Our Center is located in Amsterdam, Van Speijkstraat 37. Contact us for the possibilities!