Epsom Anaesthetic Group began in 1965 by three anaesthetists, Dr Niels Theilman, Dr Derry Lawler and Dr Ross Manning. From the outset, these doctors were pioneers in the practice of private anaesthesia in Auckland, introducing several innovations such as the first ventilator, a unique gas vaporizer and private dental anaesthesia. The first recovery room at Mercy Hospital resulted from Dr Thielman’s work.