If you get ill in Switzerland you find everywhere doctors and hospitals. Mostly they understand English. In Switzerland the people have all an insurance, which costs around 10% of the monthly income. So we have a good health system and normally you get help. As tourist you should always have an insurance company. For citizens of the EU there is agreement, that the costs are covered.

The dentist in Switzerland is private and not cover by the health insurance.

Also, just if you want to have good medicine and come for this purpose to Switzerland, there is a network organisation providing high class medicine in Switzerland
www.swisshealth.com