I don’t. But the hospice social worker convinced me that it is very important to assign a trusted individual to every person  in your family. NOW. Do not wait. I found this online at the New York State Department of Health.

The New York Health Care Proxy Law allows you to appoint someone you
trust – for example, a family member or close friend – to make health
care decisions for you if you lose the ability to make decisions
yourself. By appointing a health care agent, you can make sure that
health care providers follow your wishes.

Your agent can also decide how your wishes apply as your medical
condition changes. Hospitals, doctors and other health care providers
must follow your agent’s decisions as if they were your own. You may
give the person you select as your health care agent as little or as
much authority as you want. You may allow your agent to make all health
care decisions or only certain ones. You may also give your agent
instructions that he or she has to follow. This form can also be used
to document your wishes or instructions with regard to organ and/or
tissue donation.

A Living Will is also a good idea.