I don't know the answer to that question, but in his open letter to the NCAA, he speaks of traveling to the reservations around the state. How often he does this, I can't say. I can, however, say that I did run into Kupchella once a few years ago while he was visiting the Turtle Mountain Reservation.
EDIT: I was also told this past spring that Kupchella had lunch once a week at American Indian Student Services. I was invited to one of the lunches, but was unable to attend.