What is a health care proxy — and how do you choose the right person?

If you read my previous blog post, you already know that "my family knows what I want" isn't a plan. A real plan starts with a health care proxy document — and in Massachusetts, this is the single most important end-of-life document you can have in place.

The form itself is the easy part. But choosing the right person to name on it is where most people get stuck.

What a health care proxy actually does

A health care proxy is a legal document, governed by Massachusetts General Laws Chapter 201D, that designates one person — your "agent" — to make medical decisions on your behalf if you are ever unable to make them yourself. Once that document is in place and the trigger condition is met (you’re unable to make medical decisions), your agent's voice carries the same legal weight as your own. Hospitals are required to follow the agent’s decisions.

That is an enormous amount of authority. And it's why the choice of who to name matters so much.

I’ve served as a healthcare proxy myself. I know firsthand what it asks of a person — and how much easier the role becomes when you've done the work to truly understand what someone you love would want.

The mistake most people make

Most people name the obvious person. The spouse. The eldest child. The family member who lives closest. And often, that's the right choice. But not always.

The obvious person is sometimes the wrong person. A loving spouse who cannot bear the thought of letting go. An adult child whose own beliefs would override yours. A sibling who, with the best of intentions, would push for doing everything every time. Naming someone out of obligation, birth order, or geography rather than fit can put your wishes in the hands of someone who is not equipped to honor them — even though they love you.

What to really look for in a proxy/agent

The right proxy/agent isn't necessarily the person closest to you. It's the person best suited to advocate for your wishes when it's hardest to do so. Here are the qualities that matter most:

The proxy can hear what you actually want — even if they disagree. Your proxy may personally believe in fighting until the very end, or in stopping treatment early. What matters is whether they can set their own beliefs aside and represent yours. Some people genuinely cannot. That's not a character flaw — but it disqualifies them.

The proxy can hold their composure under pressure. Medical crises are loud, fast, and emotional. The right proxy can stay clear-headed when family members are crying, doctors are presenting options quickly, and time is short. Calm matters more than charisma.

The proxy can stand up to other family members. This is the part most people don't think about until it's too late. At some point, a good proxy may need to tell a sibling or a parent: "I know you want to keep going. But this isn't what she wanted." That requires backbone. It requires being willing to be unpopular for the right reasons.

The proxy will be available. The person you name needs to be reachable when it matters. Someone overseas, someone with a high-pressure job that makes them unavailable, someone whose health is fragile — these are practical considerations that often get overlooked.

You trust them. Completely. You should be able to imagine the worst possible scenario and feel certain that this person would do right by you. If there is any doubt, choose someone else.

Permission to choose someone unexpected

You do not have to name a family member at all. A close friend, a sibling-in-law, a former colleague — anyone you trust completely can serve as your proxy. Massachusetts law gives you wide latitude to choose the right person, not the obvious one.

And you can — and should — name an alternate. If your primary proxy can't be reached, the alternate steps in.

How Caregiving Pathways can help

At Caregiving Pathways, my role is to help you think this choice through carefully — not to fill out a form for you, but to help you understand what you're really asking of the person you name and whether that person is truly the right fit.

I also sit with clients and their proxies together, walking through the specific decisions and values the proxy will need to advocate for. Because the healthcare proxy is only as strong as the conversation and understanding behind it.

If you're trying to decide who to name, or if you've named someone and aren't sure they're the right person, reach out. This is exactly the conversation I'm here to have.