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​Eliza Yong,
Senior Counsellor

​Ms Eliza Yong, BSc (Psychology), is a senior counsellor at the National Addictions Management Service of the Institute of Mental Health since 2009.  She is a Certified Substance Abuse Counsellor and Certified Gambling Addiction Counsellor by The Association of Professionals Specialising in Addictions Counselling (APSAC). Eliza provides individual and group counselling to clients with substance and behavioural addiction issues, both in the inpatient and outpatient settings and as well as to their families. She runs separate psychoeducational and process groups for clients with substance addiction, for families of gamblers as well as for female clients with addiction issues.  She also works with clients who perpetrates family violence with comorbid addiction issues and referred by family court since 2011.

​John Chua,
Senior Counsellor

​John Chua, a Certified Addiction Counsellor/Certified Clinical Supervisor has been with the National Addictions Management Service (NAMS) since his return from Australia in 2006. He obtained a Master of Counselling from The University of Queensland (Australia) in 2005. In 2012, he completed a two-month residency programme with the Problem Gambling Services, Department of Mental Health & Addiction Services (DMHAS) in Connecticut, USA. His specialisation includes working with adolescents and adults with addiction issues, which involves programme development, one-on-one counselling, and facilitates group sessions for family members and individuals who have been diagnosed with substance and/or behavioural addictions.


Dr Sandor Heng,

​Dr Sandor Heng, DPsychCl, is a practising clinical psychologist at the National Addictions Management Services (NAMS). He currently holds a General Psychologist registration with the Allied Health Practitioner Regulatory Agency (AHPRA), Australia. He attained his qualifications as a psychologist in Australia, and has completed placements in NSW Health and Queensland Health during his postgraduate training. He has also worked in the capacity of a dual-diagnosis clinician within Gold Coast Drug Council (GCDC) drug rehabilitation facility, and within a private practice, Currumbin Clinic (formerly known as Evandale Health Services), QLD Australia. Sandor first joined IMH in 2013 as a psychologist in General Psychiatry, and subsequently joined NAMS in 2015. He has a specific interest in working with individuals who present with addictions and co-occurring mental health problems.


S. B. Viknesan,
Senior Counsellor

​​S. B Viknesan is current a Senior Counsellor at the National Addictions Management Service (NAMS), Institute of Mental Health (IMH). He has been working in the field of addiction counselling for over 12 years, providing both Individual and Group counseling to patients with substance and behavioral addictions. Previously, he worked as a Social Worker for about 4 years at SINDA Family Service Centre (FSC).  A well sought-after addictions trainer, Viknesan is currently the main trainer for the NCPG-NAMS collaboration for a gambling certificate course and one of the local trainers for APSAC training individuals doing both the substance and gambling addiction courses. He also specialises in Motivational Interviewing (MI) in the addiction context. His special interest is in grooming future substance and gambling addiction counsellors in the community and addiction-related agencies, so as to improve their counsellors' clinical standards through proper training, supervision and certification.



​Ms Habibah has a Master of Social Science in Professional Counselling. She is currently working as an Addiction Counsellor with the National Addictions Management Service, Institute of Mental Health and specializes in Cognitive Behavioural Therapy. She has 15 years of working experience with adolescents and their families in the Ministry of Education (MOE) as an Educator and a Full-Time School Counsellor. Apart from providing counselling services to patients with substance use, gambling and internet gaming addiction, she also runs psycho-education workshops and conducts talks to the families. Currently, the NAMS Family Workgroup collaborates with WE CARE Community Services and CNB to help families who are struggling with substance use addiction.​
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All addictions: 6-7326837, Gambling helpline: 1-800-6-668-668