[2][3] Dunger undertook his clinical training at Great Ormond Street Hospital, University of London, specialising in paediatric diabetes and paediatric endocrinology [1] achieving a Bachelor of Medicine, Bachelor of Surgery on 1 January 1971.

[4] Between 1986 and 2000 Dunger was Consultant Paediatric Endocrinologist at the John Radcliffe Hospital, University of Oxford.

[5] In 2000, Dunger was appointed to Addenbrooke's Hospital and at the same time took up the second Chair of Paediatrics at the University of Cambridge.

[1][6] In 2012, Dunger was awarded the Andrea Prader Prize, from the same society, in recognising his outstanding achievements in leadership, teaching and clinical practice in the field of pediatric endocrinology.

[7] The award was named in honour of Andrea Prader, the Swiss scientist, pediatric endocrinologist, who discovered Prader–Willi syndrome.