Professionals working together to improve our patient’s hearing and quality of life.
HIA Professional Network
Our Team
At Hearing Implants Australia, our team consists of highly skilled audiologists and hearing specialists dedicated to providing personalized care, advanced hearing solutions, and ongoing support throughout your hearing journey.
Dr Phillip Chang specialises in ear surgery in children and adults with particular training and interest in tympanomastoid surgery, cochlear implants and acoustic neuroma surgery.
Following his ENT training in Sydney, Dr Chang completed a series of fellowships with Ugo Fisch in Zurich, David Moffatt in Cambridge and The House Ear Clinic in Los Angeles.
Currently Dr Chang operates at St Vincent’s Private Hospital, Sydney Children’s Hospital, Prince of Wales Private Hospital, Norwest Hospital and St Luke’s. In addition Dr Chang serves as the clinical director for a paediatric cochlear implant programme (The Shepherd Centre) and an adult programme (Hearing Implants Australia).
Dr Draghi trained in Argentina and Australia obtaining ENT training and post-training subspecialties in Paediatric Otolaryngology, Otology, Neuro-Otology and Skull Base, as well as implantable solutions.
In 2014, he completed a Fellowship in Otology, Neurotology and Implantable Hearing Aids at St Vincent’s Private Hospital with Dr Chang. He works at St Vincent’s Private Hospital and serves the broader Central Coast and Newcastle region.
Dr Serefli completed a Fellowship in Otorhinolaryngology in 1997. In 2016, he completed a Fellowship in Otology, Neurotology and Implantable Hearing Aids at St Vincent’s Private Hospital with Dr Chang.
He has worked in the Illawarra and Shoalhaven areas for the past 13 years. He expanded his practice and in 2017 developed a locally based Cochlear Implant program, in conjunction with Wollongong Private Hospital and Hearing Implants Australia. Dr Serefli has two practices that support our cochlear implant recipients, located in Wollongong and Nowra.
Dr. Hannah North is a qualified surgeon with the Royal Australasian College of Surgeons, specialising in ear, nose, and throat issues. She graduated with honours in Medicine from The University of Sydney in 2005 and completed her ENT training across various Sydney hospitals.
Dr. North has conducted research on inner ear hair cells and has extensive teaching experience, currently instructing medical students at the Westmead Clinical School. She completed fellowships in paediatric ENT and complex ear surgery in the UK and has further enhanced her skills through international training in hearing reconstruction and endoscopic techniques. She has also completed the Advanced Surgeons Course with the Institute of Cochlear Implant Training in Valencia, USA.
Since 2016, she has been practicing in Sydney, seeing patients at Norwest Private Hospital and operating at multiple local hospitals.
Dr North also performs surgeries for our public patients, who do not have cover under Private Health Insurance, DVA or Workcover.
Dr. Rhydian Harris is a dual fellowship-trained surgeon specialising in Ear, Nose, and Throat conditions for both adults and children. He graduated with honours from Guy’s Kings & St. Thomas’ Hospitals in London and completed extensive surgical training, including a fellowship in Otology and Neuro-otology at the Manchester Skull Base Unit.
After moving to Sydney, he pursued advanced training in ear surgery and refined his skills in rhinology through the Sydney Rhinology Fellowship and additional fellowship training at Westmead Hospital. With a strong background in immunology and significant paediatric experience from the Royal Manchester Children’s Hospital.
Dr. Harris is passionate about childhood ENT conditions. He consults at The ENT Care Hub and Norwest Private Medical Centre, providing operative care at several hospitals in Sydney. He conducts outreach clinics at Port Macquarie ENT and Head & Neck Surgery. Operative care is provided at Westmead Private Hospital, Chris O’Brien Lifehouse Hospital, and Sydney Day Surgery Hospital.
Dr Harris also performs surgeries for our public patients, who do not have cover under Private Health Insurance, DVA or Workcover.
Dr Ranga Sirigiri is a fellowship trained ENT Surgeon with special interest in otology and Cochlear Implants. He has done a Paeditric Otolaryngology fellowship from USA apart from training in India.
Dr June Huang is an Australian-trained ENT Surgeon, who has undergone further sub-specialty Fellowship training in Otology (Ear Disorders) at St Vincent’s Hospital, Sydney.
She obtained her Medical Degree at the University of Manchester, England, and completed her Foundation Training in the United Kingdom before relocating to Sydney.
She is a VMO ENT Surgeon at St George Hospital and Sutherland Hospital, also operating at St Luke’s Hospital and St George Private Hospital.
Dr Aydin Mohammadi is an Otorhinolaryngologist Head and Neck Surgeon (ENT) who is based in the Central West. Aydin attended high school in Parkes and finished his Bachelor of Medicine degree at the University of Newcastle, and his Masters of Surgery at the University of Sydney. He completed his ENT specialty training in NSW, Australia.
He is a Fellow of the Royal Australasian College of Surgeons (FRACS), and a member of the Australasian Society of Otorhinolaryngologists Head and Neck Surgeons (ASOHNS). Aydin is a Clinical Lecturer at the University of Sydney.
Dr Mohammadi has rooms based in Orange and specialises in:
- Cochlear implantation, bone conduction device implantation, stapes and middle ear surgery
- Rhinoplasty and sinus surgery
- Head and neck cancer surgery
- Salivary gland disease
- Thyroid surgery
Dina is a cochlear implant audiologist who specialises in adult assessment and rehabilitation. She is a dual trained speech pathologist and audiologist and combines these skills to assist with auditory rehabilitation training for cochlear implant recipients, with a particular interest in complex case management and optimisation of the patient journey.
She works closely with each of our surgeons across our locations, and assists with maximisation of patient outcomes. In particular, she works on increasing awareness of implantable solutions with Dr Chang at St Vincent’s and Norwest Private Hospitals, with Dr Harris at our Port Macquarie location, with Dr North at Westmead and Norwest Private, and with Dr Serefli in our south coast practices.
She also has a special interest in upskilling and providing education for audiologists and other health professionals, and regularly engages in research and development, educational events for patients and clinicians, and assists with the development and refinement of our outreach programs.
Lilly is a Implant Audiologist and PhD candidate in auditory neuroscience with expertise in diagnostic audiology, neuroimaging, and neuromodulation. She is currently developing her expertise in rehabilitation following implantable hearing devices, with a particular interest in complex case management and providing care for individuals in rural and remote areas, helping to maximise their hearing outcomes and quality of life.
Her research focuses on auditory plasticity and how the brain adapts to changes in sound, particularly in the context of hearing loss and noisy listening environments. She is part of the Neurodivergent Listening Brain Lab at Macquarie University, where her work explores how auditory processing differs across individuals. Alongside her clinical and research work, Lilly has a strong background in higher education and university governance. She has designed and led university courses in auditory neuroscience, teaching over 200 students about cognitive science, psychoacoustics, and hearing physiology. She is also committed to science communication and public engagement, serving as a research publication editor for Hearing Matters Australia, where she translates complex hearing science into accessible insights.
Yashaswini is a dual-trained speech-language pathologist and audiologist. She completed her Bachelor of Audiology & Speech-Language Pathology at the JSS Institute of Speech and Hearing, and more recently completed her Master’s of Audiology at Macquarie University.
Yashaswini comes with a welcoming and calming presence, and with a wealth of knowledge in adult rehabilitation. She loves solving a puzzle, so complex patients and trouble-shooting at her specialty.
Yashaswini has sub-interests in vestibular, hearing aid and implantable solutions care. Yashaswini works most closely with our surgeons Dr Hannah North and Dr Rhydian Harris in Westmead Private Hospital, with Dr Ranga Sirigiri in Dubbo, and with Dr Aydin Mohammadi in Orange. She also services the Wagga Wagga region.
Mona is a highly qualified audiologist who specialises in adult vestibular assessment and rehabilitation. She initially completed her Audiology studies in Tehran, and has been practising as an audiologist for more than 10 years. In Australia she completed training to obtain certification under the Australian College of Audiology (ACAud), and is currently completing the Master’s of Audiology degree at Macquarie University.
Mona comes with years of experience in identifying and treating vestibular disorders and lesions. Patient safety and care is at the forefront of every clinical decision she makes. She is highly respected as an expert in the field of vestibular audiology.
Krystina is a new graduate from Flinders University in South Australia. Krystina completed a Bachelor of Medical Science and a Bachelor of Letters (Health) prior to completing the Master’s of Audiology at Flinders University.
Krystina brings a fresh perspective and energy to our practice through her experience as a long-term medical receptionist, as patient care and accuracy are most important for her. Krystina loves to see regional patients, and works most closely with our surgeons Dr June Huang at St George Private, Dr Ekrem Serefli in Wollongong and Nowra, and Dr Chang at St Vincent’s Private Hospital.
Jasmine is a new graduate from La Trobe University in Victoria. Jasmine completed a Bachelor of Pre-Veterinary Studies prior to completing the Master’s of Audiology at La Trobe University in Melbourne.
Jasmine brings a unique take on client care and conversations through her background as a veterinary nurse, and understands that communication and delivery are some of the most important aspects of patient-centred care. Jasmine works most closely with our surgeon Dr Rhydian Harris in Port Macquarie, Dr Chang and Dr Hannah North in Norwest Private Hospital, and at St Vincent’s Private Hospital, and also looks after our Tamworth patients.
Amanda is an experienced Audiologist with over 20 years of experience; dedicated to enhancing the quality of life for her clients through improved hearing. She adopts a client centred approach, working with her clients to understand their hearing loss and work with them to choose the best management strategies that they feel they can work on a day-to-day basis.
Amanda has worked in a range of clinical, management and training roles, across a variety of clinical settings – including small business, large private companies, Universities, hospitals and Government Organisations. She was also the Founding Adviser for Hearing Implants Australia (2016) and is currently a practicing Audiologist with Hearing Implants Australia, based in the metropolitan clinics.
Amanda holds a Bachelor of Health Science (Hearing and Speech) from Sydney University and a Master of Clinical Audiology from Macquarie University. She holds a current certificate of clinical practice and is a full member of Audiology Australia.
Zoey is often the first friendly voice our patients hear and a consistent point of support throughout their care journey. As our Client Services Advisor and Patient Advocate, she looks after day-to-day administration while ensuring every patient feels heard, supported, and well informed.
Zoey plays an important role in coordinating appointments, assisting with enquiries, and helping patients navigate their care with confidence. She is a strong advocate for patient needs, taking the time to listen, explain processes clearly, and liaise with the clinical team to ensure concerns are addressed promptly and thoughtfully.
With a calm and compassionate approach, Zoey helps create a welcoming experience for patients and families, supporting them from their first contact with our clinic through ongoing care.
Stef is our practice manager. She has worked alongside Dr. Chang for 19 years and provides a seamless patient journey and enhanced operational efficiency. Stef she effectively manages daily operations, staff coordination, and patient relations.
Alison is our experienced medical receptionist. She has keen attention to detail and ensures everything runs smoothly and efficiently. Alison is dedicated to maintaining order with an air of professionalism.
The HIA Professional Network
The Hearing Implants Australia Professional Network is Australia’s professional network of independent health and hearing professionals working together to improve our patient’s hearing and quality of life.
All member clinics of the HIA Professional Network are independent clinics that have a drive and focus for treating hearing loss with surgeons who are interested in raising hearing implant awareness.
The HIA Professional Network ensures that those people who need hearing implants are able to access state of the art technology, under the continued of care of their local audiologist. This is true for city, regional and rural patients, all of whom have the best professional medical and audiological support.
We know that clear and open communication is essential
Whether you’re a patient, healthcare professional, or GP seeking more information or support, our team is ready to assist you.
Reach out to us for a prioritised referral, inquiries about implantable hearing technology, or to learn more about our services. Let us connect you with the care and expertise you need.
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