Mtn Dew, and many others (hard to keep track of which libertarian is going off on fact-deficient rants), here are some realitites of the health care system you need to know. I've posted similar stuff before, but frankly it gets old trying to use real facts to keep refuting the same old cliched empty arguments, so I'll not be on this thread again.
You seem to think that 40 million (or whatever number you like, but it is in the 7 digits) uninsured implies that those 40 million don't access the health care system at all, and so if they did, we would need this army of new personal and supplies. That's just completely wrong.
Uninsured come to office visits and pay cash if they have to, or go to an urgent care. Usually putting off minor stuff but going if they have to. Or they go to sliding scale clinics staffed by medical students supervised by doctors volunteering their time (I occasionally work in one of those).
Of course, the ultimate safety net is the ER. When they show up with non-life-threatening symtoms, they have to choose whether to pay (or agree to pay, and then not pay when the bill comes) or leave. This would be the diabetic coming in with high blood sugar (but still functional), or the hypertensive coming in with a blood pressure of 185/100 having run out of meds. Both of those are not immediately life-threatening, so they are sent home (or asked to pay if they want to be seen).
If the diabetic stays hyperglycemic (which they will do in the abscence of some generic insulin or an oral drug), and goes into a coma, someone calls 911, he is brought to the ER. Now, he is in eminent danger of dying, and by law he must be treated. You probably think that is wrong, but it is the law of the land. So, he gets admitted to the ICU, put on a ventilator, gets lab draws every hour, is given IV fluids, insulin, etc, and he racks up a 10,000 dollar bill for every day in the ICU.
A similar scenario plays out with untreated hypertension- eventually a stroke or heart attach happens, has to be treated by law, and the costs run up by the 10,000 dollars per day. We all pay for this- by higher premiums, higher taxes, etc.
So, it is not that the uninsured do not get care- they access the system here and there, and have an enormously high rate of accessing the system for expensive, catastrophic care. So we have the nurses, doctors, and supplies to deal with them. Those of use who see these patients on a daily basis can't help but think paying a small amount up front for chronic management of diseases is far preferable to paying enormous sums when things get catastrophic. It's also far easier to manage high blood pressure than it is to manage the hemorrhagic stroke that happens from untreated high blood pressure.
Now, my solution would be to get a basic level of care for all, to minimize the amount of catastrophic care that occurs downstream (some strokes, diabetic comas, and other things will still happen). We already pay for the catastrophic care, I'd rather pay for the easy cheap stuff that prevents the bad expensive stuff.
Or, we could take the libertarian view and repeal all laws mandating medical care in the face of life-threatening illness, and let people die on the streets in front of the ER. I guess someone will have to pay to haul the bodies away, but eventually this will eliminate a lot of sick people, and leave a more perfect super-race of americans to carry on. That approach has worked well in the past.