Our Team

Prof Dennis Lau
MBBS, PHD, FRACP, FCSANZ, FHRS
CARDIOLOGIST & ELECTROPHYSIOLOGIST

Dennis obtained his MBBS from The University of Melbourne. Following his clinical Cardiology training at the Austin and Repatriation Hospital in Victoria, Dennis moved to South Australia to join the Cardiac Electrophysiology team at the Royal Adelaide Hospital in 2006.

After completion of his subspecialty training and PhD from The University of Adelaide in 2010, Dennis undertook postdoctoral training in The Netherlands at Maastricht University and Medical Centre. His appointment as staff specialist in Cardiology and Electrophysiology at the Royal Adelaide Hospital commenced in 2013 where he also oversees the cardiac device and pacing clinic.

Dennis has won many awards for his research efforts as well as research funding from the National Health and Medical Research Council of Australia, the Royal Australasian College of Physicians, The Hospital Research Foundation and The University of Adelaide. He is recognized both nationally and internationally in the field of Heart Rhythm research. To date, Dennis has co-authored more than 230 peer-reviewed publications (including international consensus papers) and book chapters. He serves as an associate editor and editorial board member of several international peer reviewed scientific journals. He is actively supervising doctoral and honours candidates through The University of Adelaide.

He is interested in all aspects of clinical cardiology with a focus on cardiac pacing, electrophysiology and ablation procedures to treat arrhythmias, risk factor management and syncope. He is the leading specialist in Australia with an interest in management of patients with dysautonomia and postural orthostatic tachycardia syndrome.

After completing her Bachelor of Medicine and Surgery at the Royal College of Surgeons in Ireland, Phoebe returned to Australia to undertake her GP training.

Dr Phoebe Chieng has now been working as a GP for the last 20 years with an interest in a holistic approach to all aspects of medicine.

Her primary role at Integral Health Care is to assist in the POTS clinic, assessing new patients and coordinating a multidisciplinary approach to managing this condition. 

Alvin Quah is a cardiac electrophysiologist with a comprehensive background in cardiology. A graduate of the University of Queensland in Brisbane, Australia, Jing further honed his expertise through rigorous training at the University of Sunshine Coast and the prestigious Princess Alexandra Hospital in Brisbane, Queensland. His commitment to advancing his knowledge and skills led him to undertake an electrophysiology and PhD fellowship at Flinders Medical Centre from 2020 to 2022. Following this, he expanded his experience with a two-year electrophysiology fellowship abroad in Halifax, Nova Scotia, from 2022 to 2024. Jing's achievements include being a recipient of the National Heart Foundation Health Professional Scholarship in 2020 and the Flinders University PhD Scholarship in the same year. He is currently completing his PhD with the College of Medicine and Public health, Flinders University.

He is a prolific contributor to the field of cardiology, having co-authored over 25 cardiovascular manuscripts and presented his research at numerous local and international conferences. Currently also serving as a visiting electrophysiologist at Cairns Base Hospital, Jing specializes in cardiac device implantations, including pacemakers, implantable cardiac defibrillators, and cardiac resynchronization therapies. His expertise extends to advanced ablation procedures for various arrhythmias, such as atrial fibrillation, supraventricular tachycardias, atrial flutters, and ventricular tachycardias. With his passion for cardiology and dedication to patient care, Alvin Quah continues to make significant contributions to the field, helping to improve the lives of those affected by cardiac conditions.

Dr Celine Gallagher is an academic nurse with a special interest in dysautonomia and cardiovascular disease. She has held several specialist clinical cardiology roles in the United Kingdom and Australia including management of a rapid access chest pain clinic, a nurse led angina clinic, a nurse led PCI clinic and as a cardiac rehabilitation consultant.

Since entering a research career, she has focussed on improving outcomes in chronic conditions, with a special focus on atrial fibrillation (AF) and autonomic dysfunction. She completed her PhD in 2019, which explored the role of alternative models of care delivery and cardiovascular risk factor management to improve outcomes in AF. Her postdoctoral work focused on translational clinical research, implementing and evaluating interventions to improve outcomes and reduce health care burden in the AF population. Recently she has increasingly focused on opportunities and interventions to improve outcomes in dysautonomia and specifically Postural Orthostatic Tachycardia Syndrome (POTS). 

Celine will hold a combined role at Integral Healthcare, providing clinical care of individuals with POTS in addition to research exploring opportunities to improve diagnosis, treatment and outcomes in this population.

Gemma is a clinical nurse with extensive experience in cardiac nursing, including cardiac rehabilitation and risk factor modification. She has spent most of her career working at The Royal Adelaide Hospital in a number of different roles, before moving to The Integrated Cardiovascular Clinical Network, where she managed a cardiac rehabilitation telehealth program.

More recently Gemma has developed an interest in Dysautonomia, including Postural Orthostatic Tachycardia Syndrome. She has particular interest in identifying triggers for these conditions, as well as looking at patient quality of life, and subsequent workforce and economic burden.

Gemma is looking forward to combining a clinical and research role in the area of Dysautonomia, and hopes to improve clinical outcomes for these patients.

Caelum has over a decade of experience as an Exercise Physiologist, including hospital rehabilitation and private practice.

Personal experience has shaped Caelum's passion to help other people who are living with dysautonomia and other invisible illnesses, empowering them with strategies, lifestyle changes and movement plans to improve and manage their condition.

He currently provides Exercise Physiology services specifically for people living with a variety of invisible illnesses to improve quality of life, health and disability related outcomes, including POTS, ME/CFS, EDS and other connective tissue disorders, Fibromyalgia, Long COVID and other types of dysautonomia and invisible illness. He has worked with a variety of people with invisible illness from bed-bound to elite athletes.