Dr Mersiades is a Sydney-based Medical Oncologist who works at Northern Beaches Hospital and GenesisCare, Frenchs Forest.

He competed his medical training at the University of Sydney and medical oncology training and a clinical trials fellowship at the Crown Princess Mary Cancer Care Centre in Sydney with a focus on thoracic malignancies. 

He has worked as a Medical Oncologist at Riverina Cancer Care Centre and Manly Hospital prior to commencing at the Northern Beaches Hospital where he is head of oncology, and helped to establish a thriving public cancer treatment service and clinical trials unit. He leads a number of collaborative group and industry-led cancer trials at Northern Beaches Hospital, helping provide cancer treatment and opportunities for clinical trial participation to the people of the Northern Beaches, closer to home.

Dr Mersiades is a research fellow at the NHMRC clinical trials centre at the University of Sydney, with a focus on thoracic cancers and medicinal cannabis, and is involved in ongoing lung cancer research through involvement with the Thoracic Oncology Group of Australasia (TOGA).