Datuk Dr. Mazeni Alwi is a distinguished Senior Consultant Paediatric Cardiologist at the National Heart Institute (IJN) with over 30 years of experience. He is a pioneer in congenital cardiac care in Malaysia, specializing in complex interventional paediatric cardiology and hybrid procedures. His dedication to teaching, research, and numerous publications in high-impact journals, coupled with his international speaking engagements and leadership roles in prestigious cardiology societies, underscore his commitment to advancing pediatric heart health.