As far as I know, if you are in the northeast or midwest, your chance, as a DO, to match in a decent University program is very good as long as you have good scores and grades. By looking at the match list for the last 4 years (at my school), I can tell that 70% of the IM programs, were University hospitals. Usually, people who are interested in fellowships go to the University programs and people interested in Primary care go to the community hospitals.