Our Doctors

Sleep Testing Australia boasts a network of independent sleep scientists and sleep and respiratory physicians that provide sleep testing oversight, review and specialist consultation with our patients. This is an important distinction as the scientists and doctors are not employed by Sleep Testing Australia. This ensures independent governance of scientific analysis and medical review of sleep studies that form the service.

Our independent network of doctors are also available for consultation should your GP feel the requirement for specialist involvement in your sleep health.

Dr Andreas Fiene

North Brisbane

Dr Andreas Fiene is a thoracic, transplant and sleep physician. He is particularly interested in chronic respiratory illnesses (COPD, emphysema, asthma and bronchiectasis) and their influence on breathing related sleep disorders.

Andreas is a Staff Specialist at the Prince Charles Hospital in Brisbane and practices privately from his rooms in Clayfield and Northlakes.

Dr Andrew Pattison

Sunshine Coast

Dr Andrew Pattison is a Queensland born and trained Respiratory and Sleep Physician practicing on the Sunshine Coast. He has extensive experience and interest in the management of all general respiratory and sleep disorders.

Andrew holds a Staff Specialist position at the Sunshine Coast University Hospital and consults privately at the Sunshine Coast University Private Hospital and Buderim Private Hospital.

Dr Csaba Varga

Townsville & Toowoomba

Dr Csaba Varga is a respiratory and sleep physician and internal medicine specialist. He currently practices at Townsville Hospital in pulmonary and critical care.

Csaba has also practiced in Toowoomba and continues to practice privately via a telehealth sleep clinic, facilitated by us at Sleep Testing Australia.

Dr Darren Bowles

Gladstone & Surrounds

General physician, Dr Darren Bowles trained United Kingdom and has been the Clinical Director at Gladstone Hospital respiratory service.

Dr Bowles has advanced training in respiratory medicine and in sleep medicine and has particular interest in chronic lung disease, industrial lung diseases,  sleep apnoea and respiratory failure.

Dr Herman Lam

NSW Central Coast

Dr Herman Lam is a sleep and respiratory physician, completing his specialist training at Royal North Shore Hospital in Sydney. He has particular interest in obstructive sleep apnoea, chronic respiratory diseases and respiratory failure and is fluent in Cantonese.

Herman practices privately at Gosford and St Leonards in New South Wales.

Dr KK Kwong

South Brisbane & Mackay

Dr Kwong is a respiratory physician who completed his training in Hong Kong before immigrating to Australia in 2017. He has particular interest in chronic airway diseases (including asthma, COPD and bronchiectasis) as well as bronchoscopic and pleural procedures for lung cancer.

Dr Kwong established the South City Respiratory Centre in late July 2020 and speaks fluent English, Cantonese and Mandarin.

Dr James Anderson

Sunshine Coast

Dr James Anderson has a special interest in pulmonary hypertension and pulmonary embolism and leads the pulmonary hypertension unit at SCUH .

James is a Staff Specialist at Sunshine Coast University Hospital (SCUH) and Senior Lecturer with Griffith University School of Medicine. He consults privately at the Sunshine Coast University Private Hospital (SCUPH) and Buderim Private Hospital.

Dr John Feenstra


Dr Feenstra sees general respiratory patients and has a special interest in Pulmonary Arterial Hypertension (PAH), Chronic Thromboembolic Pulmonary Hypertension (CTEPH), Obstructive Sleep Apnoea and non-invasive ventilation.

Dr Feenstra is head physician for PAH/CTEPH at The Prince Charles Hospital and a Senior Lecturer at the University of Queensland. He also practices privately at the Wesley Hospital.

Dr Marcus McMahon

East Melbourne

Dr Marcus McMahon specialises in the full range of sleep disorders, including sleep apnoea, narcolepsy, insomnia, circadian rhythm disorders and sleep-related movement disorders.

Marcus is a consultant specialist at the Epworth Hospital in Richmond, and with the Victorian Respiratory Support Service at the Austin Hospital. Marcus also practices privately at his Richmond rooms.

Dr Michael Holt

South Brisbane

Dr Michael Holt received his medical degree from The University of Queensland and completed his advanced training at The Prince Charles Hospital and Royal Brisbane and Women’s Hospital.

Michael commenced his sub-specialty training with the inaugural Mycobacterial Fellowship at Princess Alexandra Hospital and serves on the Program Committee of the Assembly for Pulmonary Infections and Tuberculosis for the American Thoracic Society.

Dr Rachel Thomson

South Brisbane

Dr Rachel Thomson has a special interest in respiratory problems of the elite athlete including asthma management and vocal cord dysfunction as well as respiratory mycobacterial infection. Rachel maintains an active research program into the clinical and environmental epidemiology of these infections.

Rachel consults privately at the Greenslopes Private Hospital.

Dr Rosemary Gan


Dr Rosemary Gan is a respiratory medicine specialist with a particular interest in sleep apnoea and complex sleep related breathing disorders.

Rosemary practices privately at the Nambour Selangor Private Hospital and operates the Selangor Respiratory Function Lab.

Dr Sameh Samuel

South Sydney & Wollongong

Dr Sameh Samuel is a Respiratory and Sleep Physician and is a Conjoint lecturer at the University of Newcastle. His main interests include asthma, COPD, lung cancer, sleep medicine and respiratory failure.

Sameh shares his time seeing patients in private practice at South Sydney and Corrimal.

Dr Scott Claxton

North & South Perth

Dr Scott Claxton is a sleep and respiratory physician obtaining his advanced training in respiratory medicine with both the Royal Perth Hospital and Sir Charles Gairdner Hospital.

Scott is a consultant physician at Joondalup Health Campus and also practices privately at Joondalup Private Hospital and St John of God Medical Centre in Murdoch.

Dr Riaz Tegally

Gold Coast & Sunshine Coast

Graduating from King’s College London, Riaz is a general dentist with special interest in sleep dentistry.

Having worked in the UK and Australia he has worked in public, private and corporate environments across all disciplines of general dentistry, and operates an oral appliance therapy clinic for sleep apnoea from our Gold Coast and Maroochydore sites.

Dr William Zoan

South Brisbane

William graduated from the University of Queensland Dental School and is passionate about all aspects of general dentistry. He has a special interest in sleep apnoea and operates an oral appliance therapy clinic from our Mt Gravatt site.

He is a member of the Australian Dental Association Queensland and the Australasian Sleep Association.