Dr Alexander Treble is a fellowship-trained Paediatric and Adult Otolaryngology (Ear Nose and Throat) surgeon. He graduated from Sydney University Medical School in 2013, and worked in hospitals across NSW and the ACT throughout specialist training, including Westmead Children's Hospital, Sydney Children's Hospital Randwick, and The Canberra Hospital. Dr Treble graduated with a Master of Surgery from Sydney University Medical School in 2019.

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Dr Treble undertook his fellowship in Paediatric Otolaryngology Head & Neck Surgery at The Hospital for Sick Children, Toronto, from 2023 to 2024. He returned to Australia in 2024 and works in Sydney and Canberra. 

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Dr Treble has trained with a focus on otology (ear surgery) and hearing implant surgery including cochlear implants and bone conduction implants for the hearing impaired. He has a particular interest in endoscopic (keyhole) ear surgery in both paediatric and adult patients as a way to minimise incisions and pain. 

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Dr Treble is passionate about surgical trainee education and support. He is married with two boys and enjoys skiing, learning to play golf and spending time with his family.