Drexel Combined BS +MD or Undergrad at Boston University

Its as bird in the hand as you get.

For any college, you have to keep up the GPA and get a good MCAT.
Drexel BS/MD would then highly highly make you get into medical school
where as at other colleges with the same GPA/MCAT you would have a lower chance.

Why did the OP apply to Drexel?