I had the same question four years ago! I live in New Jersey and went to House for my surgery. I asked my local otolaryngologist (who, by the way, had told me at the time of my diaganosis: "Go. to. House.") if he would handle any post surgical follow-up, and he said that hopefully I wouldn't need any, but if I did he would be happy to do so, and, as he (and my HEI doctors) said, they could easily exchange information over the phone or via email.
I also asked him (my local otolaryngologist) if I should arrange an appointment with him shortly after my return from CA and he said, no, just to come for a visit a couple of months after my surgery. I thought he was being pretty cavalier about the whole situation, but .... as it turned out I was fine, didn't need any follow-up, and dropped by to see him a couple of months later at which time he told me, "House did a great job, you are fine." And that was that.
Obviously that's not always the way things turn out, but I think you can rest assured that any local follow-up can be handled easily and hopefully in conjunction with your House surgeons.
Best wishes,
Catherine (JerseyGirl 2)