5D Clinics Melbourne Team

Dr Paul De Ieso
MBBS, FRANZCR
Radiation Oncology Consultant
Consulting from Melbourne

Dr Paul De Ieso is a thoughtful, patient-centred Radiation Oncologist dedicated to evidence-based care. He completed post graduate training in London, with fellowships at Mount Vernon Cancer Centre and the Royal Marsden Hospital.

In 2013, he led the enhancement and delivery of radiation oncology services in Darwin, providing much needed radiation oncology treatments to the people of the top end. He was clinical lead for the introduction of Deep Inspiration Breath Hold (DIBH) techniques for breast cancer patients requiring radiation therapy.

Dr De Ieso has published across multiple cancer types and has a special clinical interest in skin cancer, breast cancer, gastrointestinal cancers, urological cancers, head and neck cancers, and soft tissue sarcoma. He is passionate about using advanced radiation techniques to minimise treatment side effects and enhance patient outcomes.

Dr Michael Hsieh
MBBS, BSc, FRANZCR
Radiation Oncology Consultant
Consulting from Melbourne

Dr Michael Hsieh is a dedicated Radiation Oncologist with a strong focus on advanced radiation therapy techniques. He completed his medical and science degrees at the University of Queensland and undertook specialist training across major centres in Queensland, New South Wales and Victoria. He became a Fellow of the Royal Australian and New Zealand College of Radiologists in 2024.

Dr Hsieh is actively involved in education and research, holding academic roles with UNSW, Deakin University and the Victorian Radiation Oncology Training Network. He has contributed to several peer-reviewed publications on complex cancer cases and modern radiation techniques.

He has special clinical interests in breast cancer, prostate cancer, skin cancer, gastrointestinal cancer, and stereotactic radiation therapy, and is committed to delivering personalised, high-quality care. Dr Hsieh speaks both English and Mandarin, ensuring clear and supportive communication for a diverse range of patients.

Dr Rohan Nair
MBChB, FRANZCR
Radiation Oncology Consultant
Consulting from Melbourne

Dr Rohan Nair is an experienced Radiation Oncologist with a passion for education, clinical trials, and advanced cancer care. He completed his MBChB in Scotland and undertook specialist radiation oncology training in Victoria. He completed a clinical and research fellowship in stereotactic radiotherapy (SABR) at Alfred Health, with a focus on neuro-oncology and thoracic cancers through multidisciplinary care and clinical trials.

Dr Nair has led radiation oncology research programs and multidisciplinary care teams in Gippsland and continues to maintain a strong passion for education and academia. He is active in global collaborations and is mentored by Professor Simon Lo, a renowned SABR expert from the University of Washington, Seattle.

He speaks fluent English and Malay and treats a range of solid tumour malignancies, with a special interest in upper and lower gastrointestinal cancer, breast cancer, genitourinary cancer, thoracic malignancies, skin cancer and tumours of the central nervous system.