Well, make sure that either you or they have lots of medical equipment...in today's modern age, the medical industry is increasingly specialized. Experienced nurses, especially ICU and ER nurses, have great skills...but what skills they'll be able to transfer to your personal bug out/bug in location depends on how many supplies and equipment you have. Field medicine without modern resupply isn't practiced except perhaps by EMTs in dire situations or combat medics in the field. If you're looking for any nurse or doctor to be able to help you, you need to take this into consideration and modify your prepping accordingly. Research or ask them IF "x" event happens, what they would need. Bandages, medications, antibacterial treatments, sterile water, the list goes on for miles. It would take a LOT of time, storage space, and money to completely prepare resources to compliment their skill sets. Of course, if you DID manage to do this, if the S ever did HTF, you'd be an indispensable resource to your entire community. Medical expertise from trained medical personnel with the proper supplies and equipment will be one of the most sought after commodities during WROL. Just wait until people are getting shot, hitting their legs with axes while chopping wood, falling off of tree stands while hunting, getting bitten by poisonous snakes, getting hypothermia, etc.