tristero,
of course it can be done; i am living proof. i am even attending a different university for law school. thankfully, my medical school has been unbelievably supportive. the dean's office felt it was a great way to supplement my education. i can't believe how easy it has been.
i am happy to answer any questions you may have. but for a quick answer, i would approach your dean of student affairs and let her/him know what you are thinking and why. let them know how you plan to integrate the two degrees and the benefits. let them know where you are in the process. i approached them in the spring of ms1. i had the lsat out of the way.
good luck to you.