My opinion is that it really depends on region. For example, I go to LECOM, in Erie, PA, we have LECOM, a small osteopathic community hospital, and many many DO's, even on staff in the larger allopathic hospitals. In the Erie area, the community is aware of DO's and are not ignorant of osteopathy; therefore, DO=MD in Erie, PA
Also I have noticed that since many of the people that were in the first few classes of LECOM when it started back in the early nineties are now just getting finished with their residencies, new DO preactices are popping up all over the place in PA!! Also consider the fact the PA has PCOM in addition to LECOM, pumping out double the DO's
So in PA, DO's are plentiful and have seen them work side by side with many MD's without much conflict, how it is in other places, I am not sure!