Citibank is an American bank, isn't it?
I know Citibank is available in Belgium.
http://www.citibank.be/home.asp?lang=en
I don't think it should be a problem to access your accounts from here. You'll have to request an atm card at a bank here, to be able to work the machines, I'm pretty sure.
Can't help you with your healthcare question. For us natives it is controlled by the government. We have one of the best healthcare plans in the world, though.
But as a foreigner you might have to get hc from a private company. I'm just guessing here though.
Enjoy the beers! ;)
