I've had fully anesthetized surgery at BIMC and all went well despite a black out while it was in progress. The cost was about 70% of what I would have paid in Singapore. The hospital is world class with that the priciest in Bali but the place to go if things are complicated.
I've also been here for MRI's, Check Ups, Blood Work, and common things like Bali Belly, Asthma, and Dental. They're good but not awesome. Awesome for me is Singapore but alas I live here.