It's amazing to me how many doctors don't have any idea of their billing process, even when that is what pays their mortgage. Like Linda said, as long as their is enough money in the account to pay their bills, they are satisfied. In most of those cases they are not getting paid for ALL of the work they do.
Anyway, it's also possible the person you spoke with doesn't know exactly how the billing in the office works. Your post implied it wasn't the dr you spoke with. The answer is very vague, EMR and billing are really two separate processes, but they may have one system that handles both. They may input the info, and either it is going automatically from there, or they have a billing service that comes along and takes care of it.
By that answer though, you are left guessing.
Michele