I applied to Nova in February and then emailed them in mid March, and then they sent me an email to set up an interview. They will email you if they want to set up an interview. I also called, and got a pretty quick response about the interview. The interview process was a whole morning thing. You arrive at their building, and then get a tour of the clinic (they are going to have a brand new bigger clinic in the Fall) and a tour of campus, and then are interviewed by faculty members.
It's very strange though that they haven't replied to emails, they responded to mine a couple of days later. Calling always seems to be the best option though. 🙂