First, please make sure to get counter opinions. I'm learning that mine are valid for some people and drive other people nuts.
Tulane & USF both have "medical masters"-type SMPs where you're in class with med students, taking the same exams, graded against a similar (but not identical) curve, where the sole purpose of the program is to get you into med school, and the program publishes its (50% to 90%) success rate (oh and you might get a degree or certificate while you're at it). At Tulane this is the ACP and at USF it's the IMS. Both have solid, published results. Tulane ACP requires that you're on a med school wait list, and while it's CHEAP you can't get federal aid for it.
Tulane & USF
also have programs that I wouldn't categorize as SMPs, but which have grads who are now in med school. At Tulane there are pharm & genetics 1 year grad programs, and at USF there are several 1 year grad programs. I don't think these are a good choice if your GPA is well below competitive.
More generally:
1. My rule: assume that an SMP or SMP-ish can *only* address cumulative undergrad GPA. Don't use it to patch any other holes (like no letters or low MCAT).
2. My rule: if your GPA is within a standard deviation of the matriculated average GPA (3.3 or 3.4), then you can do almost any SMP or SMP-ish program you want and improve your chances. (Stay away from programs that aren't hosted at med schools though.)
3. My rule: if your GPA is not within a standard deviation of the matriculated average GPA (3.2 or lower) then you really have to choose an SMP that is selective and successful for
all (85%+) of its students, if you want to use med/grad work to improve your chances. Generally getting into one of these programs requires a very, very solid med school app with the sole exception of undergrad GPA.
Also look at VCU, Tufts, NYMC, RFU and others in
the postbac forum.