Most US issued insurance policies (I have BCBS) coverage stops at the border. Wise to get international travel insurance (like IMG). Can be purchased for one trip or yearly-multiple trip coverage... also may be included + can purchase upgraded evacuation insurance. I have checked and my IMG insurance (premiums seem relatively cheap) + would even cover private hospitals like Hope in Mobay....I try to come down with with a large open balance on my credit card because I have heard that hospitals may want $$ up front and then you can collect from your insurance company later...