You must have Cuban Health Insurance in order to travel to Cuba. If your tour does not include Cuban Health Insurance or you do not have insurance, please purchase your policy with Asistur.
Remember for most US travelers flying to Cuba on commercial airlines, Cuban Health insurance as well as the departure taxes are built in to the ticket fare.
For general tour cancellation and medical evacuation insurance please purchase through World Nomads here.
The U.S Department of Treasury has issued a list of FAQ’s related to all Cuba Travel, which you can find here.