Over 30 years of helping individuals with autism in 4 continents worldwide.

Hui Ling Loh , M.A, B.C.B.A. is the Clinical Director of ABC Center Singapore.   She has been a Board Certified Behavior Analyst since 2007, giving her 15 years’ experience as a BCBA serving in the USA and in Singapore. She received her Master of Arts Degree in Behavior Analysis with an emphasis in Autism and Organizational Behavior Management from Western Michigan University, together with her Bachelor of Science (Summa Cum Laude) in Psychology from the same university.   Hui Ling first joined ABC in our USA head office, where she worked with children diagnosed with ASD and other developmental disabilities, and supervising other behavior consultants and ensuring the quality of clients’ program.


As ABC’s Clinical Director, Hui Ling oversees the overall clinical operations including supervising and training of behavior technicians and behavior analysts, conducting assessments, creating and troubleshooting lessons and behavior plans, providing parent training through teaching of ABA techniques to ensure generalization process continues at home. She has provided international consultation in China and Bahrain and presented on the topic “Effectively Managing Behavior Excesses” for the 2nd International Conference “Untangle Autism 2009” at Bahrain. She has also provided program consultation for families in Indonesia, Vietnam and the Philippines.

Mari Ueda-Tao, M.A., B.C.B.A is the Chief Clinical Officer of Applied Behavior Consultants, Inc. USA and also serves as the Liaison for International Services. She holds a Master of Arts Degree in Psychology with a concentration in Behavior Analysis from the University of the Pacific, Stockton, CA, USA and she is a Board Certified Behavior Analyst.  She has many years of experience in clinically supervising behavior consultants, specializing in early, intensive intervention techniques, including comprehensive work with infant/toddler age ranges.


Mari is a member of the USA national and state-levels of the Association for Behavior Analysis. Internationally, she has trained a number of teachers and parents on the implementation of ABA principles with children with Autism in Algeria, Bahrain, Dubai, Ethiopia, France, Iceland, Philippines, Portugal, Romania and Singapore.

Hyen Yu Kwek or “Xian” is ABC Center Philippines’ Behavior Analyst. She is a Board-Certified Behavior Analyst who holds a Master of Science in Applied Developmental Psychology from the University of Pittsburgh as well as a Bachelor of Social Sciences in Psychology from Singapore Management University. She used to be a Behavior Technician at ABC Center Singapore, providing ABA-based therapy services to children on the autism spectrum. It was during this time that, she learnt the importance of tailoring therapy approaches to meet the learning needs of the clients she worked with. She believes that every child deserves a chance to explore and attain their own potential. While studying in the US, she did a year-long internship at a private school especially for children with multiple disabilities or special learning needs where her responsibilities include providing behavioral support and consultancy services, as well as conducting trainings for new teachers at the school. Upon graduation from her Master’s program, she returned to ABC Center. Xian is passionate about her work with children with special needs and finds it extremely fulfilling to work hand-in-hand with their families and teach staff to help these children reach their fullest potential.

Audrey Lau is ABC Center Philippines’ Behavior Analyst. Since her undergraduate days, Audrey has always been interested in working with children, both typical or with special needs. With a degree in child psychology from Southern New Hampshire University, she went on to pursue a Master of Education concentrating in Autism and Developmental Disabilities at the University of Texas at Austin. After spending more than a year working as a behavior therapist in clinical, school, as well as in-home settings in Texas, Audrey returned to her home country (Malaysia) to continue providing services (both as therapist and supervisor) for the special needs’ population. She eventually obtained her certification as a Board-Certified Behavior Analyst (BCBA) in year 2018 and is now working with ABC Center Singapore. She hopes to make a difference in the lives of children with special needs. She believes that every child learns differently, and she strives to provide the help required to meet the individualized needs of each client .

Eileen Tan is ABC Center Philippines’ Behavior Analyst. Eileen started her career as a behavior therapist before embarking on her role as a behavior analyst, she has more than 13 years of experience in the ABA field working with children with developmental delays. It was her first job as a 1:1 ABA therapist that sparked her passion to work in the early intervention field. She completed her Master of Science in Applied Behavior Analysis from Bangor University, Wales, and proceeded to continue her role as a behavior therapist in the United Kingdom for a few years before moving back to Singapore. She continued her role as a senior behavior therapist until she achieved her BCBA certification. She then focused on program planning and supervision as well as provided trainings on the principles of Applied Behavior Analysis. Eileen aspires to make quality ABA services more available to the greater population. With that, she also believes that a collaborative effort together with other service providers and the children’s family is essential in creating a more conducive environment to stimulate children’s learning and growth.

Kim Urbano is ABC Center Philippines Associate Behavior Analyst. She graduated from De La Salle University Manila, where she received her Masters in Special Education, Bachelor’s degree in Psychology, and Teaching Certificate Program. She was awarded St. Mutien Marie Scholarship in the same institution for maintaining a 3.9 GPA.  She has years of experience working as ABC’s Behavior Technician handling individuals with autism and other developmental disabilities, with experience both in the Philippines and in Singapore. Working in the field of behavior analysis and directly implementing programs for children with special needs has given Teacher Kim a sense of purpose in life. She is driven by her goal, which is to create programs that would have a positive impact on the lives of the children and their families. She believes that the parents are central to the child’s development too, thus she thrives to encourage parent’s active participation and involvement in the child’s program. She has conducted several behavioral parent training. She equips parents with the right strategies to use with their child to ensure continuity of the child’s treatment plan outside ABA. It is her lifelong mission to empower parents as they are their child’s lifelong advocate and teacher.

Kathleen Castillo is ABC Center Philippines Manager. She holds a Bachelor of Science degree in Biology from the University of Santo Tomas. She also finished post graduate studies in Human Resources Management from the De La Salle University-College of Saint Benilde and is currently in the process of completing the final paper for her Master in Business Administration from the Ateneo Graduate School of Business. Before joining ABC Center Philippines, she was Human Resources Manager in corporations belonging to different industries with the most recent being one of the top petroleum companies in the country.  In her free time, Kathleen volunteers in her local community’s initiatives and programs supporting children’s education and health.

Lilibeth Tan is a Director of ABC Center. She is a U.S. licensed music and movement teacher with years of experience in teaching children, especially toddlers and pre-school aged children. She has a Bachelor of Science degree in Business Management. She has a deep passion in reaching out and helping children with autism because she herself is a mother of a special child. She deeply understands the dilemma of a parent of a special child. She has navigated through many different programs that are offered , one of which was Applied Behavior Analysis. With her at the helm, ABC Center has articulated its core value of ‘The needs of the child should always come first!’. Her goal is to share the benefits of ABA to as many parents of children with Autism, and help them attain the dream of unlocking the full potential in their children, in the same way that it has for her own child.