Reimbursing a physician for their time spent in having end-of-life discussions is not an incentive for a "death panel" decision; it would be compensating them for doing their job. If all we do is compensate physicians for treating people aggressively regardless of the circumstances, we will get what we pay for: an expensive healthcare system run amok.
In 2012, Medicare spent close to $10 billion on Graduate Medical Education. Despite this taxpayer subsidy, very little is spent on training doctors in the nuances of caring for older people.