Dr Munidasa Winslow specialises in addiction and impulse control disorders such as alcohol, substance dependence, gambling, gaming and sexual compulsivity amongst others. He is a pioneer in addiction and impulse control disorders in the Asia-Pacific region.
Before founding Promises, Dr Winslow served as chief of the Addiction Medicine Department at IMH. He played a pioneering role in the setting up of the National Addictions Management Service (NAMS).
Dr. Joseph Leong is well known to be warm and welcoming to all who have met him. He listens actively to assess what is happening and makes recommendations, going through various options for both patients and caregivers who seek his help.
He believes that recovery is possible for all and can be successful when there is appropriate support and adequate skills training – so he looks beyond finding the best combination of medications to recommending talk therapy and psycho-social rehabilitation and community partnerships.
He is highly skilled in motivational interviewing as well as solution-focused brief therapy and has been promoting health coaching approaches to all he meets. He is committed to finding the best possible solutions for the recovery of those under his care.
Before joining Promises Healthcare, Dr. Joseph Leong has actively served in both the public and people sectors to promote recovery and build community capabilities and capacity.
Dr Sharad Haridas is a respected Consultant Psychiatrist with extensive experience in general psychiatry, substance misuse and behavioural addictions. With a career spanning both London’s public and private sectors, he is recognised for his thoughtful, empathetic approach to a broad spectrum of mental health challenges. Firmly committed to advancing the field, Dr Haridas has contributed to pioneering research at Imperial College London and lectured at UCL. His practice is grounded in a holistic philosophy that integrates neuroscience, emerging treatments, and lifestyle optimisation—always guided by a balance of clinical expertise and genuine compassion.
Dr Sean David Vanniasingham is a consultant psychiatrist experienced in general psychiatry, addiction medicine, and neurostimulation treatment.
Dr David graduated from the National University of Singapore with a Bachelors in Medicine and Surgery and subsequently attained his post-graduate degree from the Royal College of Psychiatrists. After completing his psychiatry residency training, he practiced as a psychiatrist at the Institute of Mental Health (IMH) and the National Addictions Management Service (NAMS).
Dr David has a vast experience in treating patients from both inpatient and outpatient settings. He has treated a wide variety of conditions including depression, anxiety, OCD, ADHD, psychosis, addictions, stress-related conditions and insomnia. He is also trained in in the practice of neurostimulation treatment modalities such as electroconvulsive therapy (ECT) and transcranial magnetic stimulation (TMS). Dr David is a firm believer of practicing a bio-psycho-social model approach in the holistic and recovery-oriented care of his patients.
Dr David is passionate about the education of young doctors. He was awarded the National Healthcare Group teaching recognition award for medical educators. He has also presented at conferences and given public education talks. He is an examiner for the MRCPsych (UK) examinations held in Singapore. Dr David is a fellow at the Academy of Medicine Singapore and is currently serving as an executive committee member of the Singapore Psychiatric Association.
