To some extent, ambulance is usually not covered by the oui plan (but an order of magnitude cheaper than in the US), prescription medicines aren't 100% (but also much much cheaper than in the US anyway), neither is dental or vision. But your hospital stay is free, and so are doctor and specialists visits. If you have a health plan through work, or costs 300-500 per month in my experience and is a benefit so you only pay the taxes on it and then it covers dental, vision, sometimes alternative medicine, psychologist, etc.
