Over the succeeding 25 years, Theile earned an array of professional accolades. Alongside his fellowship of the Royal Australasian College of Surgeons, he was made a fellow of the Royal College of Surgeons of England, an Honorary Fellow of the Royal College of Surgeons of Edinburgh, and an Honorary Fellow of the Australian and New Zealand College of Anaesthetists. He holds three honorary professorships, and is an honorary member of the medical academies of both Singapore and Malaysia. He has been awarded an honorary Doctorate of Philosophy by the University of Queensland, and is an Officer of the Order of Australia. He is currently appointed as the Chief Executive Officer of the Metro South Health Service District.