If and when you need to renew your (white) medical card you have to make an appointment at your local Citizen’s Advice Bureau – this is the number to call 22 309 100 there is a choice of locations, depending on where you live.
After you have made your selection you will actually be put through to a person who will give you the next available date.
When you go please take with you the following:
Current medical card
Passport
Residency document