Dr Gary Leong

​Dr Gary Leong


Dr Gary “Koala” Leong is a Paediatric Endocrinologist, Child and Adolescent Obesity Expert, and author of award-winning book called “Ride to Life: a no-nonsense program for breaking your family’s cycle of obesity and connecting to a healthier, happier life”.

Go to  https://2020familyhealthchallenge.com to obtain book.

Dr. Leong has almost 30 years experience in the management of childhood growth and endocrine disorders and children and adolescents with Type 1 and Type 2 diabetes. He received his paediatric and endocrine training at the Prince of Wales Children’s Hospital, Randwick (now the Sydney Children’s Hospital) and the former Royal Alexandra Hospital for Children’s Hospital, Camperdown, before undergoing 3 years of clinical and research training in paediatric endocrinology at the National Institutes of Health in the USA. He also has a PhD in Molecular Endocrinology and Vitamin D action from the Garvan Institute, UNSW. He left the Lady Cilento Children’s Hospital in Brisbane in April 2017 where he had been working the last 13 years as a Senior Staff Specialist in Paediatric Endocrinology and Diabetes and as a Senior Research Fellow in the Institute for Molecular Bioscience at The University of Queensland.

Since December 2016 Dr Leong has been appointed as a Senior Staff Specialist at the Nepean Hospital in Penrith. This position is associated with an academic appointment at the University of Sydney through the Nepean Charles Perkins Centre Research Hub where he conducts clinical and basic research into child obesity and metabolism. Dr Leong is the pediatric clinical Lead in the new whole of life span Nepean multidisciplinary Family Obesity Service at the Nepean Hospital and Nepean Blue Mountains Local Health District. He is also the Head of Paediatric Diabetes services at the Nepean Hospital.

He has memberships of several national and international paediatric endocrine and research societies and was the last Chair of the Australasian Paediatric Endocrine Group (APEG) Growth Hormone Advisory Committee, which helped the Federal Department of Health by providing expert advice on children with short stature treated with growth hormone therapy.

Dr. Leong is a UQ Expert and a member of the NHMRC Research Translation Faculty
Dr. Leong sees infants, children and adolescents into young adulthood with disorders of growth and puberty and diabetes, including:

  • short stature
  • early and delayed puberty
  • thyroid disorders (hypothyroidism and hyperthyroidism)
  • disorders of the pituitary gland
  • Lifestyle disorders such as child and adolescent obesity insulin resistance and Type 2 Diabetes Mellitus.