Thanks Chris. My employer has some kind of discount negotiated with Sanitas, but does not pay for any private medical cover. I spoke on the phone with Sanitas today, and they will send me some more details so I can understand my options and costs.
I am a bit disappointed by the lower level of preventive care which the Spanish Social medical system seems to provide than I had expected; good preventive care is the best way to reduce overall social costs...
Jay