Contact To book an appointment, or make an enquiry, call:1300 286 362 Dr George Liang has consulting rooms at the Cutting Edge Surgical Associates in Castle Hill, located in Sydney’s West. ADDRESS. 69 Showground Rd, Castle Hill NSW 2154PARKING. Parking is available onsite, or on-street on Cecil Avenue. FAX. 02 9680 1648EMAIL. surgery@drgeorgeliang.com.au Map