Australian Medicare is exactly like an Australian style Medicare lol. What other style of Medicare should somehow know to compare it too to answer your question?
The healthcare card is for low income earners to get subsidised prescription medication and doctor appointments.
http://www.humanservices.gov.au/customer/services/centrelink/commonwealth-seniors-health-card This is the concession card. http://www.humanservices.gov.au/customer/dhs/medicare This is our universal health care system.