That is the rule, but they are never charged as no admin department is set up to handle it, it's much less hassle and cost effective to just treat them.a vistors visa they are basically tourists and would need travel insurance and could possibly charged for any treatment
When was the last time you went into a hospital they asked for your medical number and ID before they treated you? They can't even bemaking patients a cup of tea, cleaning the wards, or being polite.....