I would like to add that even in tertiary markets, there are locations/assets that meet this.

Many wont even live till 60.People get blinded by the new shiny toy that they forget, REAL ESTATE IS THE RETIREMENT VEHICLE so why put a retirement vehicle into another retirement vehicle which you can't even enjoy until you're dead or crippled with medical issues.

I loved it so much that I left my job in Medical sales to join a broker that specializes in this loan.

Look up medical for Shock Wave therapy and/or Pre Nuvo body scan.I just don't like Enabler or Victim approaches. 

But I’m cooking to make them into medical student (residents) or travel nurse homes. 

It depends on your “ideal tenant” and strategy once you PCS.Would you be looking to rent to single officers going through training, military families with children, medical corps personnel TDY to Ft Sam Houston for several months, maybe even an AirBnB near Lackland, etc.?

I'm building a new MF house, targeting travel medics.

You cannot broker or assign other persons stocks or any securities without a license.You cannot broker or assign medication without a license.Certain professions require licenses and are regulated especially when it comes to high value assets and consumer protection laws.

One of the most common derogatories are medical expenses.

What if you run into medical or financial trouble?