The Principal Surgeon at Central Coast Weight Loss and Minimally Invasive Surgery is Dr. Ken Wong. Dr Wong specialises in keyhole surgeries, particularly weight loss and bariatric procedures such as gastric banding, lap band removals and gastric sleeving. Gosford & Wyong Public Hospitals, Gosford Private and Brisbane Waters Private Hospitals. Initial patient consultations are held at at: Suite 6 / 16 Hills Street, Gosford. Phone: (02) 4323 7000.