Dr Mahadevan was born in Sri Lanka (Ceylon). He migrated to New Zealand in 1984 and graduated from the University of Auckland, School of Medicine (MBchB). Subsequent post graduate training was undertaken in New Zealand as an ENT surgeon. He attained the Fellowship of Royal Australasian College of Surgeons in 1995 (FRACS).

Further post fellowship training in paediatric ENT was gained at Royal Children’s Hospital in Melbourne 1996 and Great Ormond Street Hospital for Sick Children in London 1997.

He returned following fellowship training to work in New Zealand in 1998. He now works in both the public and private sector. He was the Clinical Director / Surgeon at Starship Children’s Hospital. Dr Mahadevan is an Associate Professor with the Department of Surgery, University of Auckland.

His main practice is located at Suite A, Level 1, Kakariki Hospital, 9 Marewa Road, Greenlane. 

His sub speciality interest is paediatric ENT and neck lumps. He also has extensive experience in nasal and sinus surgery.