I'm pretty sure they can't. Also, if asked where you applied during an interview, I wouldn't read them a med school list. Just give them a few names and say "by geography."
What happened was that when asked where I applied I told them the schools I've decided to do secondaries for. So my primary says I applied to 3 more schools than I listed in the interview. I don't want to look dishonest. Any advice?
I wouldn't worry about it, its just semantics on whether you consider submitting a primary "applying" or whether you consider submitting a secondary as such.