Loss of job, medical bills, etc.

Costs will be less per unit when compared with smaller multifamily.Commercial properties (retail, medical, office etc.) require more time to find tenants.

I was medically separated from the military after 9 years, and I got a severance check of 66k, and 90% VA disability which total to 1800$ a month.

And Idaho, as for getting what is called SSI, for medical problems, rendered too ill or handicapped to hold down a paying job; Idaho also does a similar thing, of imposing several years waiting time, before the SSI payments are often approved.

I have a personal residence and almost 500k in medical school debt.

The biggest differences I've found between travel nurses (medical professionals in general) and digital nomads is that a dedicated work space is a must for digital nomads.

Medical Payments (covers medical costs of an accident on the property)There are many endorsements available and you should discuss the coverage with a qualified Independent Agent (they represent multiple companies).An Umbrella policy provides an Liability Limit that can provide coverage if a claim exhausts the limits of your Homeowners, Auto, Boat, motorcycle, etc. policies.   

Quote from @Jessica Munguia: Remove all personal items, anything of value (financial or sentimental) that you can't afford to lose, medications, etc.

Has anyone purchased a condo in Houston near medical to do a mid term rental?

If your target is travel medical professionals, FF should be at the top of your list because it's so well known in that industry.