The Medicare Australia website has information and a factsheet for Grandparents and Carers on Medicare benefits for grandparents and other carers caring for children.
Ask your Medicare Australia office about having your grandchildren added to your Medicare card. If they are over 15 they can have their own card. So long as you have a receipt you can claim Medicare benefits for your grandchildren, even where the child is not included on your Medicare card. Ask your local Medicare office or local health care centre about free dental check ups for children and teenagers.