Predictive Model - Find First Expiration Date

I am charged with building a predictive model that can find items in a hospital inventory that will expire before they are used. The idea is simple: if I use an item every week, this item has an expiration date of 50 weeks from now, and I have 60 on the shelf, then I will likely expire 10 of the items.

The complexity is that there are multiple expiration dates. So, I want be able to look down a list of 3000 items, find the multiple entries of expiration dates, and isolate them based on criteria (select, for example, the first chronologically expiration date).