Much discussed subject over many years. Unfortunately no saved data base.
Depending on the province and whether or not you have a permanent residence in Canada, you may be able to recover your health costs from the province, provided it is not a pre-existing condition.
You can join a co-pay at Hospital Chiriqui, which has lots of conditions - call them directly to find out. Other Canadians belong to BUPA - pretty expensive but good. You can use a broker to find some other company.
We have co-pay at Chiriqui, and maintain our Ontario health plan. We want Canadian doctors. If you give up your Cdn. health plan, you have to wait 3 months in Canada to restore it. Make sure you have a catastrophic fund set aside, or lots of credit card limit. or both. as they will want money up front here, or even for Medevac to Canada. You could end up in the regional hospital which is really basic.
Do your homework. As we age, the requirement for care increases.