There's a master server that stores everyones medical history. I believe it's at the Pentagon. Anyways, when you go see a doctor, they type your information into a computer, it accesses your file on the server, and they update it for your current visit. Then when you go see another doctor, and they do the same, they see all the information up to that point, and add onto it. It continues to update as such. Most offices still keep physical records, but that's only in addition to your online file. And by online, I don't mean publicly on the internet. You cannot access it.
