If my numbers are not wrong, I think the class entering medical school in five years will see a total debt burden of around $500K. As things stand now, for the class entering this year (graduating in 2011), if they borrow $60K during their MS1 year ($35-40K for tuition and $20-25K for living expenses), and that number increases 5% for each year (halfway between the historical increase in tuition of around 7% and the overall inflation of around 3%), they pay in-school interest of around 7.5% on unsubsidized and GradPlus loans, then enter forbearance for four years ... the total debt that results is very nearly $400K. So I bet that for those students entering medical school in five years, assuming a roughly 5% inflationary increase per year, the total debt will be around $500K, after all is said and done.
Here's to you, class of 2016!