In terms of investing, there are likely other factors that would likely create more "motivated sellers"...job loss, medical bankruptcy, divorce, etc.  

I am a Sr Engineer in the medical device community now and recently acquired an Executive MBA from the University of Memphis.

You will need as large of a New Worth as the lender says you need for the loan (and will have to maintain the Net Worth position for the length of the loan.You will need Attorney fees (in cash) ready to cut a check.If a complex costs $12 Million, (@25% down) that's $3 Million liquid cash for the down payment alone.Basically you need a lender (who will dictate what you must be and must have and must maintain) to be able to buy.Plus bring enough cash money to the table for the down, earnest money, fix-up money (WORKING CAPITAL) and etc...If you are in such a cash rich position right after Medical School (or know people who are that will work with you on this), great, if not--"go big" most likely will have to wait until you can put all of your needed pieces together.I imagine Student loans must be eating away at your monthly income, regarding saving up for investing.The amount of spendable hard cash you have dictates how much you can buy.Good Luck!

While it grows slower (but with much less volatility) than an IRA or 401k, you can take more money out during retirement and for much longer.

I have also rented to medical students, anywhere from 5 weeks to 1 year. 

That means living in a town or City with all the big Medical Groups, like Tampa and Orlando or maybe Jacksonville.

I worked in escrow here on Maui starting in 2012 and while things were certainly slower and there were more vacancies than there are now, and the number of people visiting Hawaii was certainly down during the recession, the islands did survive.

The key is making sure the housing environment for future tenants is clear (traveling nurses/medical professional shared home), the house rules/agreement should specifically list what items/areas are shared vs private, and outlining how tenants should coordinate with other tenants around utilizing shared areas, having guests over, mediation, etc.  

It has a cancer center and other medical centers.

Or if you are close to a hospital maybe look and see if there are any medical professionals looking for a place.I do agree with doing it yourself though.