THoughts on Md/MPH
Hey. I"m also considering this option, and as an older applicant the possibility of completing both degrees without an extra year is especially attractive to me. Mt Sinai also has a 4-year MD/MPH, but the students who were doing it thought it was pretty intense and a lot of work. I got the impression at NWern that the MD/MPH students weren't particularly overloaded, which makes me question how thorough the MPH part is.
As for the summer experience, I think that it involves research-- either policy or clinical research, so you wouldn't have to view it as an either/or choice.