The answer is yes.
By my count, excluding prelim/transitional years:
This year 45% (18 of 40) of MMS students matched to Mayo.
Last year 41% (19 of 46) matched to Mayo. This is relatively high - higher than the rate at which HMS students matched to all of the Harvard affiliated hospitals (MGH, BWH, BIDMC, MEEI, CHB, and CHA) combined (40% this year, 32% the year before). In comparison to another midwest school, WashU had 31% match to its home hospitals this year, and 26% the year before, 29% the year before that.
That said, these schools have different class sizes and the hospitals might have different numbers of residency spots.