When I walk into my doctor's office for a 3:00 appointment, my appointment actually starts at 3:00, not 5:30.
Where is this magical medical center? My experience of doctors in several states, going back decades is that, if you have an appointment at 3:00, the one thing you know is that it isn't going to start at 3:00.
I have experienced both healthcare in the US and the UK's NHS. The differences are that:
1. The US healthcare is expensive.
2. The US healthcare is delivered in locations with nicer furnishing.
3. You are much more likely to get unnecessary and expensive health services in the US.