Dr Castillo Leodivica (Ludy) was appointed as Principal Resident Physician (Supervisory) in Children’s Emergency, KK Women's and Children's Hospital (KKH) since 2016 to present. Prior to this appointment, she was Senior/Staff Registrar from 2013-2016 in the same department. Her areas of care include all Acute Paediatric Emergencies (Medical, Surgical & Trauma) and General Ambulatory Paediatrics.

Dr Castillo used to work as a Clinical Associate in KKH Neonatology between 2005~2006 and has since joined KKH Children's Emergency from 2006 to present.

In 2010, she completed her 2-year Diploma in Paediatrics and Child Health (Academy Medicine of Singapore-AMS). In year 2011, she was given the Critical Talent Award by the Paediatrics Academic Clinical programme (ACP) for her dedication and contribution to Paediatric clinical care.

Dr Castillo is a member of the teaching staff, a Lead Associate in Paediatrics Academic Clinical Programme, Duke-NUS Medical School Adjunct Lecturer, and an Adjunct Teaching Faculty at LKC School of Medicine.