I have used the Cuban health care system twice. The first time was in Trinidad at 8.00 p.m. on a Saturday evening. Excellent care by both a Doctor and a nurse - intravenous injection. The second time was in Havana at a hospital. Again, excellent care from both the Doctor and the nurse - again an intravenous injection. Each time I was de-hydrated. But unlike Canada, they actually sit and watch the effects of the injection upon you.
BUT, if you are a Canadian, your provincial health card suffices for health insurance in Cuba, AND, did you know that the provinces are actually the first insurer. In consequence if you make a claim on your insurance company, they claim the first $50 per day outpatient or if you are an inpatient, the first $100 per day, from your province!!! As health charges in Cuba are modest, providing your insurance is only for health, the potential advantages are modest!