We're so close as countries but yet so not the same.
Unless I am mistaking, our Canadian plan covers you no matter where you stay in Canada as it is a universal system paid through taxes. The new insurance takes effect 3 months after moving into the new province (for Ontario anyway). For instance, if I move from Quebec to Ontario, I get my new health card 3 months later, but still covered through my other province until then. It may mean that I might have to pay the doctor if I see him. But my Quebec plan will reimburse me until the new Ontario plan kicks in. Coverage varies from one province to the next.
In Quebec, most prescribed drugs are paid by government (no wonder our taxes are so high), if you have no work plan, etc. It has something like a deductible (not too sure how it works as I have a work plan and I don't use provincial one). But in Ontario, no drugs are covered at all. So I suppose someone has to make sure they have other insurance to cover this if needed (may be an Ontarian can confirm this).
Anyway, true that when you make some moves, you still have to do all the homework you can to avoid surprises. At least minimize it. And health is a biggie to think about.
Helene
Riding a 2014 Specialized Amira LS4 Expert - aka The Zebra!
2015 Specialized Crux e5 - aka Bora Bora bike