Dr. Filler has authored over 300 peer-reviewed publications and is an active participant in a large array of administrative committees within this academic health sciences centre. Apart from his nephrological research (especially cardiorenal syndrome type IV and improving outcomes of children with CKD), he focused on the optimization of paediatric drug dosing by studying pharmacokinetic/pharmaco­dynamic relationships of various drugs in children. Another major field of research is population health and paediatrician workforce based. He is the deputy editor of the journal "Pediatric Transplantation" and "Pediatric Nephrology" and he is on the editorial board of paediatric nephrology, transplantation, pharmacology and paediatric journals. He has also been recognized for his postgraduate teaching.