Australian Medicare number: ten digits in the groups the card prints, sometimes followed by the individual reference number of the family member. The separators are required and the first digit runs 2 to 6, which together keep it away from the phone numbers and card numbers around it.
Label: AU_MEDICARE
(?<!\w)[2-6]\d{3}[\s-]\d{5}[\s-]\d(?:[\s-]\d)?(?!\w)My Medicare is 2123 45670 1 on the green card. → 2123 45670 1Quote 3456 78901 2 3 when you book. → 3456 78901 2 3The number 7123 45670 1 is out of rangeReference 2123456701Tags: au, health, government-id