georgetown doesn't have a decelerated program, per se, but they do have two programs that allow you to take some first year classes, and if you get accepted into the med school from those programs, you won't have to retake the classes you already took.
the first is the GEMS program for certain students of disadvantaged backgrounds. i think they accept ~80% of GEMS students into the first year class. during the GEMS year, you take embryology, physiology, and endocrinology (plus some other science classes that don't count toward your 1st year classes, but which do prep you for them). second year you take anatomy, histology, biochem, genetics, nutrition, and neuro, plus all of the other nonscience classes like intro to healthcare, etc. here's the link for info:
http://gems.georgetown.edu/
they also have the one year masters program in physiology, which is less like a decelerated program than GEMS, but if you end up getting into georgetown from the program (i think they accept ~20 students out of ~200 in the program), the only science classes you end up taking first year are anatomy, biochem, genetics, nutrition, and i think biostats. and again, they also take all of the other nonscience classes, too. from what i've seen, it's super-competitive though. here's the link for info about that program:
http://www.georgetown.edu/departments/physiology/physios/index.htm