Comprising a team of experienced Respiratory and Sleep Medicine Physicians and other health professionals, our centre specialises in the diagnosis and treatment of a range of sleep and respiratory disorders for both adults and children.
Our People

Associate Professor Andrew Chan
MB BS PGCertClinLds MBA PhD FRACP
Respiratory and Sleep Medicine Physician
- Senior Staff Specialist, Royal North Shore Hospital
- Deputy Director, Centre for Sleep Health and Research, Royal North Shore Hospital
- Clinical Associate Professor, The University of Sydney School of Medicine

Professor Peter Cistulli
MB BS PhD MBA FRACP FCCP
Sleep Medicine Physician (Adult)
- Director, Centre for Sleep Health & Research, Royal North Shore Hospital
- Professor and Head, Discipline of Sleep Medicine, University of Sydney
- Research interests in the causes of and new treatments for OSA

Dr Michael Hibbert
MB BS FRACP
Respiratory and Sleep Medicine Physician
- Senior Staff Specialist, Royal North Shore Hospital
- Co-chair, Grand Rounds, Royal North Shore Hospital
- Lecturer, University of Sydney

Dr Richard Lee
MB BS PhD FRACP
Respiratory and Sleep Medicine Physician
- Senior Staff Specialist and Co-Director, Sleep Investigation Unit, Gosford Hospital
- Conjoint Senior Lecturer, School of Medicine, University of Newcastle
- PhD (University of Sydney) in obstructive sleep apnoea

Dr Sophie Timmins
MB BS PhD FRACP
Respiratory and Sleep Medicine Physician
- Staff Specialist, Royal North Shore Hospital
- PhD (University of Sydney) in the clinical uses of alternative lung function tests in COPD

Dr Sri Mahadev
MB BS PhD FRACP
Respiratory and Sleep Medicine Physician
- Staff Specialist, Royal North Shore Hospital
- PhD (University of Sydney) Airway Physiology in Obesity
- Interests in airways disease and tuberculosis

Dr Katrina Tonga
MBChB PhD FRACP
Respiratory and Sleep Medicine Physician
- Staff Specialist, St Vincent’s Hospital
- Lecturer (Medical Education), Northern Clinical School, The University of Sydney School of Medicine
- Conjoint Senior Lecturer, St Vincent’s Clinical School, The University of New South Wales
- PhD (University of Sydney) in small airway function and inflammation in asthma
- Interests in airways disease, general respiratory medicine and obstructive sleep apnoea

Dr Julian Wojtulewicz
MB BS MA (Phil) FRACP
Sleep Medicine Physician (Paediatric)
- Strong experience in neonatal medicine and neuro-developmental issues
- Accredited paediatric sleep physician
- Clinical interest in sleep breathing disorders and restless legs syndrome

Dr Meera Srinivasan
MB BS (Hons) FRACP
Respiratory and Sleep Medicine Physician
- Staff specialist (locum), Royal North Shore hospital
- PhD candidate (University of Sydney) in airways disease

Dr Herman Lam
MBBS BSc FRACP
Respiratory & Sleep Medicine Physician
- Particular interest in obstructive sleep apnoea, chronic respiratory diseases and respiratory failure
- Specialist training at Royal North Shore Hospital, Concord General Repatriation Hospital and Gosford Hospital
- Fluent in Cantonese
Dr Katherine Duszyk
BMedSci MBBS FRACP
Respiratory and Sleep Medicine Physician
Dr Shiva Subramanyam
MBBS (Hons1) MMed(ClinEpi) FRACP
Respiratory and Sleep Medicine Physician
- Honorary Medical Officer, Royal North Shore hospital
- Specialist training at Concord General Repatriation Hospital, Prince of Wales Hospital and Liverpool Hospital
- Interest in holistic healthcare delivery, upper airway disorders and sleep

Dr Kate Hardaker
B.Sc. PhD
Respiratory Scientist (Lung Function)
- Bachelor of Science (University of Sydney)
- PhD (University of Sydney) – Respiratory Physiology in Aging
- Interest in small airway function

Ms Nina Shieh
B. Applied Science (Physiotherapy), MAPA
Physiotherapist
- 20 years experience in hospital and community respiratory post-acute care
-
Holistic management of chronic respiratory conditions
Mr Ted Quan
BA(Psyc), MPsyc, GC Transcultural Mental Health, MAPS
Psychologist

Justine Lee
BAppSc (Ex&SpSc), MNutr&Diet, APD, AES
Dietitian
- Accredited Practicing Dietitian & Exercise Scientist
- Clinical and general nutrition advice
- Weight management for chronic conditions such as respiratory disease, sleep apnoea, diabetes, gastrointestinal disease and heart health
Donna Marcy
Practice Manager