Hospitals in France
What to do if you get very sick while visiting France
In any emergency, call tel. 112.
You can also call SAMU directly (from a land line) for an ambulance at tel. 15.
You should know that the World Health Orginization has ranked the French health care system as offering "the best overall healthcare in the world." So, yeah: socliaized medicine works.
Are French hospitals free?
In an emergency, you can will get treated for free in any hospital in France. If your injuries require admitance to the hopsital, there may be some minor fees—€18 a day covers room and board. (No, seriously. That €18 is not a typo. My brother-in-law was hospitalized in Paris once for several days, complete with X-rays and other diagnostic tests, and his bill was less than $100.)
A visit to a French doctor costs €25.
(For the record, few French people pay those full amounts. Their national insurance covers usually 70%–100% of all out-of-pocket costs.)