Associate Professor David Littlejohn has worked in cancer surgery for over 30 years, the last 26 years in Wagga Wagga. He is a specialist breast oncoplastic surgeon, performing a full range of breast cancer surgery and oncoplastic procedures including flap-based reconstructions. Dr Littlejohn is also a specialist endocrine, laparoscopic and general surgeon and is co-investigator at Riverina Cancer Care Centre for clinical trials.

Associate Professor David Littlejohn is past vice president of Breast Surgical Society of Australia and New Zealand and a founding member of Breast Surgeons NSW and BreastSurgANZ. He is the past chair of the BreastSurgANZ Oncoplastic Committee. He convened the first Level 2 Cadaver oncoplastic workshop in Brisbane in 2014 and has been involved in every BreastSurgANZ workshop to date. He is a member of the International Society of Endocrine Surgeons and has published widely.

He has been the director of Wagga Wagga specialist Medical Centre for the last 18 years.