Ref medical reliability and professionalism, over past years I've seen:
1. A blast injury mistreated by a hospital doctor to the point where a sinus formed.
2. An audiogram performed incorrectly by a nurse. I intervened and the test then progressed satisfactorily.
3. A loud altercation with a paramedic because I had the temerity to drive a patient who could barely walk right up to the A&E entrance. Same case; hospital gown thrown at patient who was told to undress and wear it and was then mocked for donning it the wrong way round.
A bit of airline style training, checking and CRM would not go amiss.