Our Team

Nepean Lung and Sleep proudly offers a high quality team of respiratory and sleep physicians for adults, supported by our dedicated management team.

Our physicians

Dr Donald Lee


Dr Donald Lee is a consultant adult respiratory and sleep physician, and the Practice Principal at Nepean Lung and Sleep. His clinical interests include assessment of sleepiness, sleep disordered breathing, complex Sleep Apnoea, COPD, asthma, pulmonary thromboembolic disease and lung cancer.

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Dr Saurabh Gupta


Dr Saurabh Gupta graduated from the University College of Medical Sciences, Delhi University. He then undertook MD (Medicine) and conducted one year research in patients with Chronic Obstructive Pulmonary Disease.

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Dr Benjamin Ng

BSc (Med) MBBS FRACPNepean-Lung-and-Sleep-dr-benjamin-ng

Dr Benjamin Ng is a fully qualified Respiratory and Sleep Physician, recognised by the Royal Australasian College of Physicians since 2008. He obtained his MBBS at the University of NSW, and undertook medical registrar training at RPAH before completing his sub-specialty training at St George and Auckland hospitals.

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Dr Joachim NgiamNepean-Lung-and-Sleep-dr-joachim-ngiam

BDS (Hons) MSD (ortho) MPhilMed (Sleep Medicine)

Dr Joachim Ngaim graduated with honours in Dentistry from the University of Sydney and holds Master’s degrees in Dentistry (Orthodontics) and Medicine (Sleep Medicine). He is a Research Fellow/Visiting Dental Officer in the Respiratory and Sleep Department at the Royal North Shore Hospital. He has been awarded the Rudolf Gunz University of Sydney Medal in 1992 and received the American Academy of Dental Sleep Medicine Research Awards in 2011 and 2012.

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Dr Gaurie Palnitkar


Gaurie Palnitkar is a specialist adult respiratory and sleep physician, graduating with honours from the University of Melbourne in 2003. After completing her internship at Royal Melbourne Hospital, she embarked on specialist Physicians’ training and sub-specialty training in Respiratory and Sleep Medicine at the Royal North Shore Hospital (RNSH). She was admitted as a Fellow to the Royal Australasian College of Physicians in 2011 before spending a further 2 years as Sleep Medicine Fellow at RNSH and commencing private practice.

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Our management team 

We are committed to the highest standards of customer service and care, guided by our dedicated management team.

Gracie Moshi, Practice Manager


Gracie is Practice Manager at Nepean Lung and Sleep, a Registered Polysomnographic Technologist (RPSGT) and an Accredited Clinical Physiologist (Sleep). As part of her responsibility for the overall operations and development of the clinic, she liaises with hospitals, specialists and pathology providers on behalf of our patients and physicians; develops personnel policies; maintains equipment; orders medical supplies; and ensures compliance with all government guidelines.

 Grace takes pride in contributing to the success of the clinic, and ensuring all patients are given access to good medical services. She enjoys the genuine spirit of cooperation amongst the team, which revolves around helping our patients in the best possible way.

Natalie Gauci, Respiratory Laboratory Manager


Natalie Gauci is a Certified Respiratory Function Scientist (CRFS) and Clinical Physiologist in Respiratory and Sleep (ACCP). As our Respiratory Laboratory Manager, she is responsible for the overall performance of our laboratories; training scientific staff and driving professional development; developing and implementing policies and procedures within the laboratory, maintaining laboratory statistics and implementing a rigorous quality assurance program.

She also builds relationships with various manufacturers and suppliers, and ensures we maintain an accredited TSANZ respiratory testing facility.

Natalie is currently studying a Master of Philosophy in Medicine at The University of Sydney. She is also the study coordinator for a international study on patients with a diagnosis or suspected diagnosis of asthma and/or COPD.

Erin McMahon, Sleep Laboratory Manager


Erin is a Registered Polysomnographic Technician (RPSGT) and an accredited Clinical Physiologist in sleep. She is responsible for the performance of the sleep laboratories, training scientific staff, maintenance of NATA laboratory accreditation and the technical and clinical provision of high-quality diagnostic and treatment investigations for patients with the full range of sleep disorders, as well as conditions associated with respiratory failure.

Erin is adept at managing Nepean Lung and Sleep’s large fleet of sleep and respiratory equipment, including the latest technology advancements. She enjoys assisting patients with their sleep and respiratory health journey, and recently contributed research with colleagues from other sleep laboratories to the 2019 Sleep Down Under Conference.

Shelley Gauci, Office Manager

Shelly is responsible for the day-to-day operations of Nepean Lung and Sleep, and works closely alongside physicians and technicians to ensure the needs of the clinic are met. With her strong people skills and high levels of organisation, she assists the administrative team by overseeing all patient appointments, patient queries and inquiries.