Dr Sadler is a graduate of the University of Queensland. He spent 6 ½ years with The Royal Flying Doctor Service in Port Augusta SA. He then moved with his family to Inverell in Northern NSW where he was a rural general practitioner for 27 years. He has always had a keen interest in Skin Cancer Medicine.
He moved to the North Coast area in 2005 and decided to concentrate on the management of Skin Cancer problems. Initially he was contracted to Molescan Australia Pty Ltd but in January 2010 he purchased the Taree clinic from Healthscope Pty Ltd
The clinic was renamed Manning Great Lakes Skin Cancer Clinic because of the many patients seen are from the Taree, Forster, Tuncurry and outlying areas.