Beacon ABA Services, Inc. (Beacon) is a private group practice of behavior analysts and behavioral therapists organized to provide intensive behavioral services to individuals with developmental disabilities. The practice specializes in providing evidence-based treatment interventions to children with Autism Spectrum Disorder (ASD) and Pervasive Developmental Disorder (PDD). Beacon works extensively with individuals who exhibit a variety of developmental needs and challenging behaviors by building adaptive skills in homes, schools, and community settings. Beacon utilizes evidence-based procedures and treatments based on principles of Applied Behavior Analysis (ABA). Beacon actively contributes to the field of ABA through training students and professionals, contributing to field based research and establishing collaborative professional partnerships.
Programs & Services
Research has shown the techniques of Applied Behavior Analysis (ABA) to be highly effective in promoting the development of new skills and the reduction of inappropriate behaviors in very young children diagnosed with Autism Spectrum Disorders. Beacon ABA Services was established to provide critical services for these children.






Robert F. Littleton, Jr. Ed.D.
Founder and CEO

Paulo Guilhardi, Ph.D., BCBA-D, LABA
Executive Vice President of Operations
Dr. Guilhardi is the Senior Vice President of Operations at Beacon ABA Services of Massachusetts. He received his Master’s and Doctorate degrees in Experimental Psychology from Brown University. Dr. Guilhardi is responsible for the day-to-day business operations and expansion of the Beacon practice. Dr. Guilhardi works to ensure families have access to the highest quality and intensive Applied Behavior Analysis services. Dr. Guilhardi oversees the business operations of Beacon satellite offices representing multiple regions across the Commonwealth of Massachusetts. Dr. Guilhardi has extensive clinical experience working with children affected by the Autism Spectrum and their families in homes, schools, and residential environments

Dan Almeida, Ph.D., BCBA-D, LABA-MA
Executive Vice President of Clinical Services and Graduate Study
Daniel Almeida is the Executive Vice President of Clinical Services and Graduate Study. He is also the Program Director for the Ph.D. in ABA program at Cambridge College. Previously, he was the District Supervisor of ABA Services for a major public school district in Greater Boston and held a variety of director level positions at private, ABA-based schools is Massachusetts. He received his Ph.D. in ABA from Simmons College. Dan has provided ABA services to students with Autism Spectrum Disorders and related disabilities for over 30 years. He has published original research on staff training and interventions for students with autism in peer-reviewed journals and has presented research at national and regional conferences. He has also conducted professional development workshops in Applied Behavior Analysis (ABA). He served as adjunct faculty since 2002, teaching classes in certificate and graduate degree programs in ABA. Dan is passionate about training and supporting staff to provide culturally responsive, evidence-based ABA treatment to families.

Susan Rapoza-Houle, M.S.Ed., BCBA, LABA
Associate Vice President of Employee Development
Susan Rapoza-Houle is the Associate Vice President of Employee Development at Beacon ABA Services. She received Bachelor of Science degree in Social Work from Bridgewater State College, a Master of Science in Special Education from Simmons College, and a post master’s certificate in Behavior Analysis from Pennsylvania State University. She has been a Board Certified Behavior Analyst since 2006 and is a Licensed Behavior Analyst in Massachusetts. Sue has more than 25 years of experience in the field of behavior analysis, working with learners with intensive special needs between the ages of 18 months to 25 years of age. Sue served on the Massachusetts Autism Commission’s Workforce Development Sub-Committee, has presented her research work at local and national conferences, and has worked at Beacon for more than 18 years. As the Associate Vice President of Employee Development, she is responsible for designing and implementing professional development trainings.

Charles Newfield, Ph.D., BCBA-D, LABA, LBA, Licensed Psychologist
Chief Operating Officer

Kelley Henry, Psy.D., BCBA-D, LABA
Executive Vice President of Assessment Services

Dione Christy, Ph.D. (Consult)
Senior Vice President Office of Cultural Equity, Inclusion, and Diversity

Robert K. Ross, Ed.D, BCBA-D, LABA
Clinical Advisor
Dr. Ross is the Clinical Advisor at Beacon ABA Services of Massachusetts and Connecticut. He received his Master’s in Applied Behavior Analysis from Northeastern University and his Doctorate from Nova Southeastern University. Dr. Ross oversees all research activity at Beacon. He also provides direct and consultation services to families, schools and educational programs throughout the U.S. and Canada. He is a founding member and current Past President of the Massachusetts Association for Applied Behavior Analysis. Dr. Ross is also the President of the Autism Special Interest Group (SIG) of ABAI, and has served three terms on the ABAI Practice Board.
Beacon Staff Attend Virtual 2020 ABAI Convention
This year’s Annual Association for Behavior Analysis International (ABAI) Convention was held virtually with 300 live and simulated sessions, over 1,300 presenters, hundreds of poster presentations, and numerous workshops and exhibitors. We are delighted to have been...
The Beacon Assessment Center Welcomes a Talented New Cohort of Trainees
Beacon offers pre-doctoral APA psychology internships and post-doctoral neuropsychology fellowship training opportunities specializing in autism and neuropsychological evaluations. This fall, we are excited to have a talented new cohort of...
Partners In Professional Education
Here at Beacon ABA, we value our employees and want them to gain the most out of their experience here. We are proud to offer unique professional development opportunities including a partnership with Cambridge College. Staff earn their Masters...
Message from the President
Beacon ABA Services Corporate Office
321 Fortune Boulevard
Milford, MA 01757
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Leominster Office
80 Erdman Way, Suite 300
Leominster, MA 01453
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North Andover Office
790 Turnpike Street, Suite 105
North Andover, MA 01845
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North Dartmouth Office
92 Faunce Corner Road, Suite 120
North Dartmouth, MA 02747
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Rockland Office
55 Accord Park Drive
Suite 5 (Located on 1st Floor)
Rockland, MA 02370
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West Springfield Office
59 Interstate Drive
Suite 3
West Springfield, MA 01089
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