I was a computer science major (check out my MDApps). I had the good fortune to work on 2 clinically based computer science research projects during my undergraduate years: deep brain stimulation artifact removal and an Ophthalmology retinal imaging analysis project (got included on 2 patents out of this one, plus maybe a spinoff company). I found bridging the clinical-digital divide very satisfying. However, it took 4.5 years to graduate with all the Med school pre-reqs and the CS requirements (they do not overlap). I did the Chem/Bio stuff in Freshman/Sophomore year, as I had some AP credits going into undergrad, to get it out of the way. Found studying for MCAT on that stuff a little more challenging, but CS is pretty heavy in the math/physics, so that was pretty easy to just brush up for MCAT. If you are intent on Med School, Researchers are really looking for folks who can translate their clinical issues into programming solutions. I hope to be able to continue some CS work while in MS. Good luck.