Members

A/Prof Loh is a Senior Consultant and Head of the Department of Otolaryngology (ENT) – Head and Neck Surgery at the National University Hospital. Group Chief of the Department of Otolaryngology - Head & Neck Surgery at National University Health System. A/Prof Loh obtained his medical degree from the National University of Singapore, and started his residency in Otolaryngology in Singapore in 1998. He was then elected a Fellow of the Royal College of Surgeons of Edinburgh in January 2000. He went on to complete his residency in 2003 and continued to pursue a fellowship in Paediatric Otolaryngology in The Children's Hospital in Denver, Colorado, USA.

A/Prof Loh is trained in all aspects of paediatric otolaryngology with special interests in otological disorders, complex hearing restoration surgeries, complex airway diseases and speech disorders in children. He is a member of the Multidisciplinary Aerodigestive Team, comprising Paediatric Pulmonologists, Gastroenterologists, Speech Therapists and Paediatric Otolaryngologists, focusing on children on complex upper airway diseases. He also has extensive experience in cleft lip and palate management and works closely with the Plastic Surgery team in managing these patients.

He pioneered Sialendoscopy in the department to better manage benign salivary gland diseases and represented in Singapore in various International meeting on this subject.

A/Prof Loh is also an Associate Professor at the National University of Singapore, and is involved in undergraduate and post-graduate teaching. He is a member of the Residency Advisory Committee (Otolaryngology) under MOH and is involved in formulating the residency programme in ENT. He is the Chair of Master of Medicine (Otolaryngology – Head and Neck Surgery) Examination Committee.

A/Prof Loh also holds the Directorship of Centre for Hearing Science and Balance in NUH. Under his directorship are the Audiology service in NUH and the Masters of Science (Audiology) programme in NUS.

A/Prof Loh's research area is mainly paediatric otological problem. He has held various grants over the years and collaborated with various departments in NUS in many research areas.

Prof Wang De Yun is currently an Emeritus Professor.

He trained and practiced as an ENT surgeon in China before his appointment as a Research Associate at the Department of ENT, Free University of Brussels (AZ–VUB, Belgium) in 1989. He obtained his PhD in Medical Sciences from the Free University of Brussels (VUB) in 1995 and was subsequently appointed Director of Rhinology and Clinical Immunology Research at the Department of Otorhinolaryngology, University of Ghent, Belgium (1996–1997). In 1997, he joined the Department of Otolaryngology at the National University of Singapore as a Research Scientist. He was later appointed Research Associate Professor with tenure in 2005, and Research Professor in 2015. He served as President of the Portmann Institute (France) from 2018 to 2021.

He has published over 400 peer-reviewed articles in leading medical journals, including Science, Nature series (STTT, Nature Cell Biology, Nature Communications), Allergy, Journal of Allergy and Clinical Immunology, Journal of Clinical Oncology, PNAS, Cell Host & Microbe, European Respiratory Journal, Military Medical Research, and top ENT journals (JAMA Otolaryngology, IFAR, Rhinology, and Laryngoscope). He has also contributed to over 40 book chapters. From 2020 to 2024, he was listed among the World's Top 2% Scientists, as recognized by Elsevier and Stanford University.

His awards include the Sam Sanders Basic Science Award from the American Academy of Otolaryngic Allergy (AAOA) in 2003, the Faculty Research Excellence Award (2012) from the Yong Loo Lin School of Medicine, National University of Singapore, the Beijing High-Caliber Talent from Overseas Award conferred by the Beijing City Government, and the First Prize in Science and Technology (team award) from the Beijing Medical Society in 2023. He was honored with the Lifetime Achievement Award by the ASEAN Rhinology Society in 2024.

Prof Wang serves as Associate Editor for Allergy, International Archives of Allergy and Immunology, Therapeutics and Clinical Risk Management, Military Medical Research, Frontiers in Allergy, and Journal of Organoid and Bioscience. He is also a member of the editorial boards of over twenty journals spanning ENT, allergy, and medical sciences. He has contributed to several international and European expert committees and guideline panels in allergic rhinitis and rhinosinusitis, including the European White Paper in Allergy; the WHO initiative Allergic Rhinitis and its Impact on Asthma (ARIA 2001 and 2008); the European Position Paper on Rhinosinusitis and Nasal Polyps (EPOS 2007, 2012, 2020); the International Consensus Statement on Allergy and Rhinology: Rhinosinusitis (2016, 2021); and the International Consensus Statement on Allergy and Rhinology: Allergic Rhinitis (2018, 2023).

Prof Loh graduated from the Faculty of Medicine, National University of Singapore. He underwent specialist training in Otolaryngology at the National University Hospital and subsequently surgical fellowship in Head and Neck Cancer Surgery at the Princess Margaret Hospital and Toronto General Hospital in Canada. He is a Senior Consultant at the Department of Otolaryngology Head & Neck Surgery and Professor in the Department of Otolaryngology, National University of Singapore. His interest of practice is in Head and Neck Oncology and in the past 25 years or more, his practice is mainly in patients with cancers of the nasopharynx, thyroid, salivary glands, oral cavity, pharynx and larynx, as well as uncommon and rare head and neck tumours. He is also the Group Chairman, Medical Board, at the National University Health System.

A/Prof Raymond Ngo graduated in 1995 from the Trinity College Dublin, Ireland with 2nd class honours in Medicine. His internship was done in St James Hospital, Ireland. After completion of his National Service, he was accepted into the National Specialty Training programme for Otolarynogology. His degrees include the MRCS in General Surgery from the Royal College of Surgeons Edinburgh, the MMed and FAMS in Otolarynology with the Graduate Medical School, National University Singapore. He completed his Fellowship in Otology – Neurotology at the St Paul's Hospital & Vancouver General Hospital, Canada under Dr Brian Westerberg and Dr Neil Longridge.

A/Prof Ngo has a subspecialty practice in middle ear surgery for infections and hearing loss, cochlear implantation, lateral skull base surgery, facial nerve disorder and vestibular diagnosis and treatment.

He is an Associate Professor with the National University of Singapore, involved in the teaching of medical undergraduates. He is also the Postgraduate Director for the Department of Otolaryngology - Head & Neck Surgery, NUHS and supervises the continuous medical education for junior doctors. A/Prof Ngo also leads the NUHS Graduate Medical Education Committee Faculty Development Subcommittee. In addition, he is a member of the JCST Panel of Site Accreditors and a committee member of the Chapter of Otorhinolaryngology, College of Surgeons.

A/Prof Thong graduated from the Faculty of Medicine, National University of Singapore. After completing his Otolaryngology residency in Singapore, he received a Ministry of Health's HMDP Award and pursued subspecialty training in Rhinology and Sinus Surgery as a clinical fellow at the Lahey Clinic, Massachusetts, USA.

Therefore, apart from treating general ear, throat and neck conditions, A/Prof Thong's particular area of specialty is that of the nose and sinus (e.g., nasal allergy, nasal obstruction, nose bleeding, sinus infections and polyps). He performs various procedures, either in the clinic or in the operating theatre. These include standard endoscopic sinus surgery, minimally invasive sinus surgery (e.g., "balloon sinuplasty"), as well as advance sinus surgery (e.g., orbital decompression with the Eye surgeons, and pituitary tumour surgery with the Neurosurgeons).

His other area of clinical interest is in patients with snoring and obstructive sleep apnoea. This includes helping to make diagnoses, to recommending suitable treatment like weight management, positive airway pressure (PAP) or surgical procedures.

Research similarly revolves around sino-nasal conditions (especially nasal polyps and chronic sinusitis) and snoring and sleep apnoea (including running trials with A*Star to develop better ways of monitoring such patients).

A/Prof Thong is currently the Head of Division of Otolaryngology, Alexandra Hospital. He is an Associate Professor with the Yong Loo Lin School of Medicine, National University of Singapore, having previously served as Director of Undergraduate Education (Otolaryngology) and department Deputy Director for Clinical Services. He subsequently received the Dean's Award for Teaching Excellence in 2016, followed by the NUS School of Medicine's Special Recognition Award in 2017 for remarkable teaching contributions. He is also involved in postgraduate education and has been a National Examiner since 2013. He has been an invited speaker at both local and regional conferences and has published in various peer-reviewed journals.

Dr. Raymond KY TSANG, MS, MBChB, FRCSEd, FRCSEd(ORL), FHKCORL, FHKAM(Otorhinolaryngology), graduated from the Chinese University of Hong Kong in 1994 and received his training in otolaryngology in Prince of Wales Hospital, Chinese University of Hong Kong under Prof. CA van Hasselt. He obtained his specialist qualification in otolaryngology and fellowship of the Royal College of Surgeons of Edinburgh in 2001 and then sub-specialized in the field of head and neck surgery.

Before relocating to Singapore, Dr. Tsang was the Associate Professor in the Department of Surgery, University of Hong Kong and Honorary Consultant ENT Surgeon of Queen Mary Hospital and Tung Wah Hospital in Hong Kong. He was also the Division Chief of Ear Nose and Throat Surgery of the Department of Surgery, the University of Hong Kong-Shenzhen Hospital in Shenzhen, China. He received his Master of Surgery degree from the University of Hong Kong in 2015 with the thesis “Nasopharyngectomy with the da Vinci Surgical Robot”.

Dr. Tsang’s clinical research interests include application of robotic surgery in head and neck surgery, minimally invasive surgery in the head and neck region, endoscopic surgery for anterior skull base lesions and swallowing disorders in patients after head and neck cancer treatment. He is actively researching on the application of the next generation flexible robotic surgical systems to be used in the head and neck area.

He has published more than 100 peer review papers and book chapters. Prior to his relocation to Singapore, Dr. Tsang had been the President of the Hong Kong Society of Otorhinolarynology – Head and Neck Surgery, the President of the Hong Kong Head and Neck Society and the Chairman of the Head and Neck Subspecialty Board of the Hong Kong College of Otorhinolaryngologists.

Dr. Tsang is an Associate Professor with the Yong Loo Lin School of Medicine, National University of Singapore and Senior Consultant in the Department of Otolaryngology – Head and Neck Surgery, National University Hospital. Dr. Tsang had extensive experience in undergraduate teaching, postgraduate teaching and training of specialist doctors previously in Hong Kong and continue to participate actively in teaching in addition to his clinical and research activities.

Dr Joshua Tay graduated from the Faculty of Medicine, National University of Singapore in 2007. He completed his residency training in Otolaryngology – Head & Neck Surgery in Singapore and was awarded the College of Surgeons Gold Medal for the best performance at the Otolaryngology exit examinations in 2015.

Dr Tay was awarded the Ministry of Health Healthcare Research Scholarship, during which he completed a PhD in Cancer Biology at the Stanford University School of Medicine focusing on molecular subtypes of nasopharyngeal cancer, under the guidance of Professors John B. Sunwoo and Robert B. West. Dr Tay’s research interest involves classifying tumors based on their gene signatures and matching them with targeted therapies for personalized treatment.

He is currently a Consultant at the Department of Otolaryngology – Head & Neck Surgery. In his clinical practice, Dr Tay sees patients with general Ear, Nose and Throat conditions, as well as patients with nasopharyngeal cancer.

Dr Ng Li Shia graduated from the Faculty of Medicine, National University of Singapore in 2006. As an undergraduate, she was awarded the Otolaryngology Society Book Prize in 2005. Dr Ng started her training in Otolaryngology under the National Specialty Training program in 2008. Her degrees include the MRCS in General Surgery from the Royal College of Surgeons Glasgow and the Masters of Medicine in Otolaryngology with the Graduate Medical School, National University Singapore.

She is currently a Senior Consultant with the Department of Otolaryngology - Head and Neck Surgery, at the National University Hospital. After completing her specialist training, Dr Ng received the Academic Medicine Development Award (AMDA) in 2014 to subspecialize in Asian facial plastic and reconstructive surgery. She was a clinical fellow at the Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital in Taiwan from 2015-2016. Her interests are in functional septorhinoplasty, ear and nasal reconstruction. Dr Ng also provides outpatient, as well as surgical care for general ear, throat and neck conditions.

In the area of research, Dr Ng actively collaborates with the School of Design and Environment, National University of Singapore, in the field of surgical technology and design, as well as the Department of Anatomy, Yong Loo Lin School of Medicine, in the field of medical education.

Dr Ng is also an Adjunct Associate Professor with the Yong Loo Lin School of Medicine, NUS and is actively involved in the teaching of medical undergraduates, as well as mentoring of junior doctors and residents in the department. She previously served as the Program Director for the NUHS Otolaryngology, Head and Neck Surgery Residency Program and was also Deputy Director of Undergraduate Medicine for Otolaryngology, NUS. She is currently a Core Faculty in the Residency Program.

Dr Donovan Eu is a Consultant with the National University Hospital Department of Otolaryngology – Head and Neck Surgery and the National Cancer Institute of Singapore. He is an ENT surgeon by training with a specialty practice in head and neck cancers.

Dr Eu graduated from the National University of Singapore, Yong Loo Lin School of Medicine in 2010. He attained membership to the Royal College of Surgeons, MRCS (Glasgow) and subsequently commenced subspecialty training in Otolaryngology and Head and Neck Surgery with the National University Hospital Residency Program. He was conferred his Masters of Medicine in Otorhinolaryngology in 2014 and following completion of his residency program was accepted to the specialist registration in 2017.

He subsequently completed his advanced surgical training in head and neck surgical oncology at the renowned Wharton head and neck center at the Princess Margaret Cancer Center in Toronto from 2019-2021. During this period, he also took on a research fellowship position at the Guided Therapeutics program at Techna institute – a collaborative institute between the University Health Network and the University of Toronto.

Dr Goh obtained his medical degree from the Yong Loo Lin School of Medicine, National University of Singapore in 2010. He started his residency training the ACGME-I accredited National University Health System ENT residency program in 2012. He obtained the postgraduate qualifications of Member of the Royal College of Surgeons (Ireland) in 2012, as well as the Masters of Medicine in Otolaryngology-Head and Neck Surgery in 2014. He completed his residency training in 2017, serving as the National ENT Chief Resident in his final year of training.

Dr Goh is currently appointed a Consultant in the Department of Otolaryngology – Head and Neck Surgery, National University Hospital, Singapore.

Dr Goh is trained in all aspects of the surgical and medical management of general Otolaryngology-Head and Neck Surgery conditions and has a special interest in managing diseases of the ear and hearing restoration.

In the area of research, Dr Goh's research interests are varied and include research into optimal monitoring of obstructive sleep apnea (OSA) patients after surgery as well as prognostic factors affecting management of thyroid cancers, and has presented in multiple local, regional and international conferences.

Besides performing clinical work, Dr Goh is active in teaching and mentoring of medical students and junior doctors, and firmly believes in the Hope for a Better Age.

Dr Crystal Cheong is a consultant in the Department of Otolaryngology – Head & Neck Surgery, National University Hospital and Ng Teng Fong General Hospital, where she helms the sleep surgery subspecialty clinics. She was awarded the Health Manpower Development Plan Fellowship in 2020, and completed the ACGME fellowship in Sleep Medicine and Sleep Surgery at the University of Pennsylvania, United States of America, in 2022. Dr Cheong's training has served her well in addressing both the medical and surgical aspects of a wide range of sleep disorders. She is passionate in providing effective, holistic and patient-centred care for sleep conditions such as obstructive sleep apnoea, and is involved in scientific industry trials to explore new frontiers of treatment. She has also published in several peer-reviewed journals.

Dr Cheong graduated from Monash University, Australia, and proceeded on to become a Member of the Royal College of Surgeons (Edinburgh), before attaining her Master of Medicine (Otolaryngology) and specialist accreditation in Otolaryngology. She is the Otolaryngology undergraduate programme director at the Yong Loo Lin School of Medicine, National University of Singapore, a role which enables her to actively educate and train future generations of doctors.

Dr Xu Xinni is a Consultant with the Department of Otolaryngology – Head & Neck Surgery in NUH. She is trained in all aspects of general ear, nose and throat conditions. Her subspecialty interest is in rhinology, including allergy, sinus surgery and endoscopic skull base surgery.

After obtaining her medical degree from Yong Loo Lin School of Medicine, National University of Singapore in 2007, Dr Xu went on to complete her postgraduate ENT training in an ACGME-I accredited residency training program.

Besides providing clinical care to patients, Dr Xu is also actively involved in research. In 2017, Dr Xu was awarded the Clinician Scientist Unit Pitch for Funds grant award for her research project. Her research experience includes presentations at locoregional and international conferences, and she has published articles in various peer-reviewed medical journals.

Dr Shih E’Ching is a Consultant with the Department of Otolaryngology – Head & Neck Surgery in NUH. She is trained in all aspects of general ear, nose and throat conditions. Her special interest is in pediatric otolaryngology.

After obtaining her medical degree from the Yong Loo Lin School of Medicine, National University of Singapore in 2011, Dr Shih went on to complete her postgraduate ENT training in an ACGME-I accredited residency training program. Besides caring for patients, Dr Shih also enjoys teaching undergraduate and post-graduate students as a clinical lecturer with the Yong Loo Lin School of Medicine, National University of Singapore.

Dr Lim Wei Sian is a head and neck surgeon specialising in the surgical management of head and neck cancers including those of the oral cavity, larynx, thyroid, salivary glands, and skin. He serves as an otolaryngology consultant in the National University Hospital, Alexandra Hospital, and the National University Cancer Institute, Singapore.

He graduated from the National University of Singapore in 2011 and attained the Masters of Medicine in Otolaryngology in 2017. He completed his residency training in Singapore, during which he was the top scorer for the Otolaryngology In-Training Examinations in 2018 and 2019. He also received the SOHNSS Academic Excellence Award for being the top scorer in the 2020 otolaryngology exit examinations.

In 2023, he received the Learning Development Award under the Health Manpower Development Plan. He then underwent a 1 year head and neck surgical oncology fellowship at the Chris O'Brien Lifehouse in Sydney. During this time, he was trained in the techniques of ablative and reconstructive head and neck surgery.

Dr Lim participates actively in both education and research. He is involved in the teaching of undergraduate medical students as well as post-graduate ENT residents. He has presented his research work in both local and international conferences and published in international journals.

Dr Yohanes Ting is a Consultant with the Department of Otolaryngology - Head & Neck Surgery in National University Hospital. He graduated from the Yong Loo Lin School of Medicine, National University of Singapore in 2012. He commenced his training in Otolaryngology under the ACGME-I accredited National University Health System Otolaryngology Residency Programme in 2015. He further obtained the post graduate qualifications of Member of the Royal College of Surgeons (Edinburgh) in 2014, as well as the Masters of Medicine in Otolaryngology - Head & Neck Surgery in 2018. Dr Ting completed his Residency training in 2020, serving as the National Otolaryngology Chief Resident in his pen-ultimate year of training.

Dr Ting is trained in all aspects of the medical and surgical management of general ear, nose and throat conditions. He has a special interest in Facial Plastics surgery and reconstructive surgery of the Head & Neck.

In addition, Dr Ting enjoys teaching and is a clinical educator with the Yong Loo Lin School of Medicine, National University of Singapore. He is actively involved in the teaching of medical undergraduates as well as post graduate residents of the Otolaryngology Residency Programme.

In the area of research, Dr Ting has published in peer-reviewed international journals. He has also presented his work in multiple local, regional and international Otolaryngology conferences on multiple topics in the field of Otolaryngology.

Dr Tan is a Consultant in the Department of Otolaryngology - Head & Neck Surgery at National University Hospital. She is also part of the Head & Neck Surgery service at Ng Teng Fong General Hospital, under the NUHS cluster.

She graduated from the Yong Loo Lin School of Medicine, National University of Singapore in 2013. Dr Tan completed her postgraduate residency in Otolaryngology in Singapore, and was accredited as a specialist in Otorhinolaryngology in 2021. She is also a member of the Royal College of Surgeons (Glasgow), and has a Masters of Medicine in Otolaryngology (Singapore).

Dr Tan is trained in medical and surgical care for all general ear, nose, and throat conditions. She has a special interest in the field of head and neck oncology. This includes management of neck lumps, thyroid and salivary gland disorders, as well as nasopharyngeal, oral cavity, oropharynx and larynx cancers.

In addition to her clinical duties, Dr Tan is also actively engaged in undergraduate clinical education at the Yong Loo Lin School of Medicine, and postgraduate teaching in Otolaryngology.

Dr Margaret Zhang is an Associate Consultant in the Department of Otolaryngology - Head & Neck Surgery at National University Hospital. She is also part of the Otolaryngology service in Ng Teng Fong General Hospital.

She graduated from the Yong Loo Lin School of Medicine, National University of Singapore. Dr Zhang completed her postgraduate residency in Otolaryngology in Singapore, and was accredited as a specialist in Otorhinolaryngology in 2024. She is also a member of the Royal College of Surgeons (Ireland), and has a Masters of Medicine in Otolaryngology (Singapore).

Dr Zhang is trained in medical and surgical care for all general ear, nose, and throat conditions. She has a special interest in rhinology, allergy, sinus surgery and endoscopic skull base surgery. 

In addition to her clinical duties, Dr Zhang is also actively engaged in undergraduate clinical education at the Yong Loo Lin School of Medicine, and postgraduate teaching in Otolaryngology.

Dr Elizabeth Teh obtained her Master of Speech and Language Pathology from Macquarie University, Sydney, Australia, in 2006. She was a recipient of the National Council of Social Services VCF Scholarship (2004-2005) and was awarded the Macquarie University International Scholarship Academic Merit Prize for outstanding academic performance in 2004 and 2005. She pursued a PhD in Psychology at the National University of Singapore (NUS), under the NUS Research Scholarship (2015-2018), where she focused on emotion processing in Autism Spectrum Disorders.

Clinically, Dr Teh began her career as a Speech & Language Therapist at the Society of the Physically Disabled (SPD) upon her return to Singapore in 2006. There, she contributed to the establishment of the SLP rehabilitation services and therapy hub, providing crucial treatment to adults with multiple disabilities and children with various communication needs. She later joined the Association for Persons with Special Needs (APSN), where she went on to head the Professional Support Services at APSN Chaoyang School. In 2018, after completing her PhD, Dr Teh joined the teaching Faculty at NUS.

Today, Dr Teh is a dedicated clinician, researcher, and educator with a passion for training the next generation of skilled and reflective Speech & Language Therapists. Her research interests span language processing, emotion, and social cognition, with a focus on developing interventions to improve social communication skills in people with clinical disorders ranging from autism to dementia.

As a strong advocate for advancing the SLP profession, Dr Teh has been an active member of several professional committees at the national level throughout her career. She currently serves as a Council member of the Allied Health Professions Council, Singapore (2016-present), Chief Trainer (Speech Therapy) for the AHPC Supervisor Training Workshop (2021-present), and Honorary Advisor to the SLP professional association, Speech and Language Therapy Singapore (SALTS) (2025-2026).

Dr. Loo Hooi Yin, Jenny obtained her Master of Science in Audiology (Distinction) from University of Southampton, United Kingdom, in 2004. She was awarded the National Medical Research Council (NMRC) Research Scientist Fellowship in 2007 to pursue her PhD at the Ear Institute, University College London, United Kingdom. Her PhD research area was in auditory neuroscience.

Dr. Loo is an Associate Professor with the National University of Singapore, where she played an instrumental role starting the inaugural MSc Audiology course in Singapore in 2013. Currently she is the Progamme Director for this postgraduate Audiology programme. Other than teaching Audiology students, she is also involved in teaching Speech and Language Pathology students in NUS as well as in Singapore Institute of Technology (SIT).

Dr. Loo is not only an educator but a researcher. She has a wide range of research interests in the areas of auditory brain processing, paediatric hearing impairment, and population hearing health. She has published numerous research papers in international peer-reviewed journals and had hold a few grants in the past as principle investigator. She also supervises students for research at MSc and PhD levels.

Clinically, Dr. Loo has a joint appointment at the National University Hospital as a Senior Principal Audiologist. She has extensive clinical experience assessing and managing children with hearing loss. One of her areas of clinical expertise is in cochlear implant management, and she is also well sought-after for her expertise in the diagnosis of Central Auditory Processing Disorders in children at national and international level. Dr. Loo’s passion in Audiology extends beyond her clinical skill. She champions the community audiology projects, helping the department to expand audiological services in the community through Mobile Hearing Clinics and Satellite Hearing Clinics.

At national level, Dr. Loo is appointed as the chairperson for the Allied Health Professional (Audiology) panel at the Ministry of Health (2016 till present), overseeing the development of audiologist professional, promoting hearing health and public awareness in Singapore.