Profile picture of Edward Sia

Dr Edward Sia

Profile picture of Edward Sia


Radiation Oncologist

Dr Edward Sia believes in a compassionate and patient-centred approach to care. His warm and approachable manner enables him to build meaningful relationships with his patients and their loved ones.


Dr Edward Sia is a radiation oncologist at Icon Cancer Centre Toowoomba. In 2005, Dr Sia obtained a Bachelor of Medicine, Bachelor of Surgery (MBChB) at the University of Aberdeen in Scotland, United Kingdom and undertook specialist radiation oncology training in regional New South Wales and New Zealand. Dr Sia completed his radiation oncology training at the Royal Brisbane and Women’s Hospital and became a fellow of the Royal Australian and New Zealand College of Radiologists (FRANZCR) in 2018.

With a passion for improving access to rural and regional healthcare, Dr Sia worked as a consultant radiation oncologist at Rockhampton Base Hospital from 2019-2023. During his tenure in Rockhampton, he established and co-chaired the lung multidisciplinary team meeting and had an active role in mentoring post graduate medical students and registrars. Dr Sia is a clinical lecturer at the University of Queensland’s Rural Clinical School and enjoys participating in cancer education programs to increase awareness of the role of radiation therapy in cancer management.

Dr Sia speaks fluent English and Malay, and looks forward to caring for patients and their loved ones in their preferred language. His clinical experience covers a broad range of solid tumour malignancies, with a special interest in lung cancer, colorectal cancer, breast cancer, skin cancer and head and neck cancer.


Special Interests

Dr Edward Sia accepts referrals for all cancer types, with a special clinical interest in:

  • Breast cancer
  • Colorectal cancer
  • Head and neck cancer
  • Lung cancer
  • Skin cancer

Languages spoken

  • English
  • Malay

Affiliations & Memberships

  • American Society for Radiation Oncology (ASTRO)
  • Australian and New Zealand Urogenital and Prostate Cancer Trials Group (ANZUP)
  • European Society for Radiotherapy & Oncology (ESTRO)
  • Royal Australian and New Zealand College of Radiologists (RANZCR)
  • Trans Tasman Radiation Oncology Group (TROG)



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