He had co-authored the Adult Vaccination Guidelines with several Infectious Disease colleagues in 2016, 2018 and 2020, and has been a strong advocate for vaccination in the primary care.
His experiences in medical mission put him in touch with health promotion and disease prevention locally and overseas.
He contributes his time in the community, schools, social services on top of healthcare institutions, committees and advocacy groups.
Some of the interests he advocated strongly include but not limited to are healthcare systems and model of care, medical ethics, smoking control, issues related to teenage suicide, special needs children and their family and prevention of cancer via vaccine.
He manages the Tampines Family Medicine Clinic and leads the Class Primary Care Network (PCN). He is also the founder and chairman of the GP+ Co-operative Limited in Singapore.
Besides clinical and consultancy work, Dr Leong is also an Adjunct Assistant Professor at Duke-NUS and Yong Loo Lin school of Medicine, NUS. and an adjunct clinical instructor at Lee Kong Chian School of Medicine.
He is also involved in post graduate training with the College of Family Physician Singapore and Family Medicine Residency program with National Health Group Polyclinics and SingHealth Polyclinics.
Dr Leong believes in developing the future generation and he is involved in mentoring younger students and doctors in medicine, technology as well as developing their medical practice in the private sector.
