I've suggested multiple times on this bored to take the MCAT instead of the GRE and use whatever score you get on that. In terms of healthcare hours most of fine are from shadowing when I was premed...maybe 150 hrs. I prob only have 10 or so with an anesthesiologist or AA. Just did the bare minimum of what was required. I am in the process of finishing up a MS in Biomedical Sciences and got my undergrad degree in Chemistry from GCSU.