FWIW, I am a visiting retired Emergency Physician who just experienced trauma care via SAME ambo at Rivadavia 2/6. They used my US PP for a MRN, but never inquired as to an address or phone. Four hours, head CT, one xray, fracture ADVICE (no treatment, needed only a special sling for this, but they didn't have any); didn't clean the facial laceration from pavement impact, and there was no tetanus available. Medical student did the eyebrow suturing (possibly her first case), badly, and they wanted to put me on antibiotics (in lieu of washing???) But we did this with available supplies during the 3 hr wait in an icy procedure room with a painful unsupported fracture and no pain med, not even a sheet or pillow. Used a trashed supply bag as a windbreaker.
No bill upon departure, and no way for them to send one, unless they askwhen/IF I go back there for followup.
We figure, we got what we paid for!
Fortunately I have EP friends in BA, and am getting better followup privately.
Although the above cited regulation was adopted last summer, we were not asked by either airline or immigrations officer (or hospital) about the supposedly required travel insurance for visitors when we arrived 1/25.