To become a healthcare proxy, you must be named as the agent on a signed healthcare proxy form completed by the person choosing you, meet your state’s eligibility rules, and wait for the authority to activate, which happens only if a physician later determines the person cannot make or communicate their own medical decisions. The document is often called a durable power of attorney for health care, and the whole process can be finished in an afternoon without a lawyer.
Being asked matters, but being asked is not enough on its own. The appointment is only legally effective if the form is filled out and signed under the rules of the state where the person receives care. Free state-specific forms are available from state health department websites, most hospitals, and national advance care planning organizations.1National Institute on Aging. Choosing A Health Care Proxy
Who Is Legally Eligible to Serve as an Agent
You have to be a competent adult. In most states that means 18 or older; Alabama and Nebraska set the minimum at 19.1National Institute on Aging. Choosing A Health Care Proxy
Beyond age, the most common bar is conflict of interest. You generally cannot serve as someone’s agent if you are their treating doctor, a nurse at their care facility, or an employee of the facility where they receive treatment. A family member who happens to work in healthcare is typically exempt from that restriction.
Practical fit matters too. An agent who lives far from the principal’s hospital can struggle to arrive during an emergency, and the role often involves pressure from family members who disagree, or from doctors recommending treatment the principal would refuse. Willingness to have direct conversations about medical care and death now, before anything happens, is part of what makes the appointment work later.
The Steps for Making the Appointment Legal
The person appointing you (the principal) drives the paperwork. Your role is to accept the appointment and know what the document says. Here is what has to happen for you to be their legal agent.
Get the Right State Form
Every state has its own version of the healthcare proxy form with its own signing requirements. Using the correct state form is the safest approach. Free copies are available through state health department websites, hospitals, and organizations like CaringInfo, which publishes downloadable forms for all 50 states.1National Institute on Aging. Choosing A Health Care Proxy
Fill in the Required Information
The form asks for the principal’s full legal name and contact details, your name and contact details as the agent, and the name and contact details of any alternate agents. It also includes space for specific instructions the principal wants you to follow, such as preferences about life-sustaining treatment, pain management, or organ donation. The principal can leave those choices to your judgment instead.
Naming at least one alternate agent is important. If you are unavailable or unable to serve when the time comes, the alternate steps in without needing to redo the paperwork.
Sign With Witnesses or a Notary
The principal signs and dates the form. Most states require the signature to happen in front of one or two adult witnesses. Rules vary, but the person named as agent almost never qualifies as a witness, and many states also bar the principal’s healthcare providers or facility employees from witnessing. Some states require notarization instead of, or in addition to, witnesses. Notary fees for this type of document generally run between $2 and $25.
Follow the signing instructions on the state form precisely. Missing a witness or using a disqualified one can void the whole document, and a void document means you are not legally the agent.
Get Copies Into the Right Hands
A signed form that no one can find during an emergency does nothing. You should have a copy. So should the alternate agent, the principal’s primary care doctor, and any specialists who treat the principal regularly. If the principal is admitted to a hospital or moves into a care facility, a copy goes into the medical chart. Digital registries like MyDirectives and the U.S. Advance Care Plan Registry let the principal upload a scanned copy for on-demand retrieval, but hospital staff may not check an online registry during a crisis, so physical copies still matter.
When Your Authority Actually Begins
Being named on a valid form does not give you decision-making power right away. Your authority activates only when a physician evaluates the principal and determines they lack the capacity to make or communicate healthcare choices. In some states a second physician must confirm the finding before you can act. The determination goes into the medical record.
Incapacity is not the same as unconsciousness. A principal might be conscious but confused after a stroke, or lucid some days and not others due to advanced dementia. Capacity is assessed decision by decision, so there may be moments when the principal handles some choices and you handle others. If the principal regains capacity, their authority over their own care resumes immediately and yours pauses.
What You Can Do Once You Are Acting
When the proxy is active, you step into the principal’s shoes for medical decisions. That typically includes:
- Consenting to or refusing surgeries, medications, tests, and other procedures.
- Making end-of-life choices about life-sustaining treatment, hospice, and pain management.
- Choosing doctors and deciding where the principal receives care.
- Handling organ donation, autopsy, and disposition of remains, depending on state law.
Your job is to make the choices the principal would make, based on their known values and any written instructions in the document. Where their wishes are not clear, you act in their best interest. Prior conversations are what let you do this well; an agent working from the form alone has less to go on than one who has actually talked with the principal about what matters to them.1National Institute on Aging. Choosing A Health Care Proxy
There are limits. You cannot make financial decisions on the principal’s behalf; that takes a separate financial power of attorney. You cannot override clearly documented wishes, so if the principal’s living will refuses a ventilator, you cannot authorize one. Your authority ends at the principal’s death, when decisions about the estate and remains pass to the executor or next of kin.
Access to Medical Records Under HIPAA
Once the proxy is in effect, you become the principal’s “personal representative” under federal privacy law. HIPAA requires covered healthcare providers to treat a personal representative the same as the patient for access to medical records and health information related to the decisions being made.2eCFR. 45 CFR 164.502 – Uses and Disclosures of Protected Health Information: General Rules You can review records, discuss the condition with doctors, and receive test results.
One narrow exception applies. A provider can refuse to share information with you if they reasonably believe the principal has been or may be subject to abuse or neglect by you, or that giving you the information could endanger the principal.3U.S. Department of Health and Human Services. Personal Representatives and Minors Outside that situation, your access rights match what the principal’s would be.
Liability When You Act in Good Faith
Most states protect agents from civil and criminal liability as long as they make decisions honestly and consistently with the principal’s known wishes. The protection exists because the role often involves time-sensitive choices where no option feels ideal. Acting in good faith, on the information you have, is the legal standard you are held to.
How the Appointment Can End or Change
The principal can revoke the healthcare proxy at any time and for any reason, as long as they still have the mental capacity to do so. Common methods are a signed and dated written statement that explicitly revokes the prior document, physically destroying all copies of the old form, or executing a new proxy that supersedes the old one. Some states also allow oral revocation in the presence of witnesses.
A revocation only works if the people holding copies find out about it. If your appointment is revoked, or if the principal replaces you, the former agent, the new agent, and every healthcare provider with a copy of the old document need to be notified. A revocation sitting unread in a desk drawer will not stop a hospital from following the outdated form in the chart.
If You or the Principal Move Between States
Most states have provisions honoring out-of-state advance directives, but recognition is not universal and details vary. A form that meets one state’s signing requirements may fall short of another state’s witness or notarization rules.
The safer approach is to execute the healthcare proxy under the rules of the state where the principal receives most of their medical care. If the principal spends significant time in a second state, completing that state’s form as well, naming the same agent, costs nothing and removes any question about whether the appointment will be recognized during an emergency away from home.