I haven't been contacted for an interview. How do I request one?

You cannot request an interview.

The Admissions Office forwards applicant contact information to volunteer alumni interviewers throughout the US and abroad. Our alumni then seek to contact as many applicants as possible to invite them to interview. With a wide alumnus/a to student ratio, however, we will be unable to offer interviews to many of our applicants.

For more info, see this page, or have a look at the related posts.