In Israel you were used to be required to provide your equivalent of ssn upon purchase of a tv setm, so the gov would be able to charge you public tv fee. the fee was finally abolished couple years ago.
The way I see it in the field, older doctors are less likely to try and keep terminal patients alive as long as possible and more likely provide just palliative care. You know, instead of intubating 90+ y/o elders that won't get extubated until death.