A California power of attorney for health care lets you name a trusted adult, called your agent, to make medical decisions for you if you cannot make them yourself. The document sits inside California’s advance healthcare directive framework under Division 4.7 of the Probate Code, and once properly signed it gives your agent authority over treatment choices, provider selection, and matters that come up at and after death, including organ donation and disposition of remains.
Who You Can Name as Your Agent
You can choose almost any adult you trust. California restricts only people whose professional role would create a conflict: your supervising healthcare provider, an employee of the healthcare facility where you receive care, and an operator or employee of a community care or residential care facility where you live. Those people may still serve if they are related to you by blood, marriage, or adoption, or if they are a coworker.1California Legislative Information. California Probate Code 4701
Most people name a spouse, adult child, sibling, or close friend. Medical training is not the point. What matters is that the person understands your values, can hold their ground in a tense conversation with doctors, and will carry out your wishes when other family members push back. Name at least one alternate in case your first choice is unavailable or unwilling when the time comes.
Signing Requirements That Make It Valid
A written California advance healthcare directive needs three things: a date, your signature, and either notarization or signatures from two qualified witnesses.2California Legislative Information. California Probate Code 4673 If you cannot physically sign, another adult can sign for you in your presence and at your direction.
If you use witnesses, both must be adults, and neither can be the person you named as your agent. The following people also cannot witness:
- Your healthcare provider or any of their employees.
- An operator or employee of a community care facility.
- An operator or employee of a residential care facility for the elderly.
At least one of the two witnesses must be someone who is not related to you by blood, marriage, or adoption and is not entitled to any part of your estate.3California Legislative Information. California Probate Code 4674
If You Live in a Skilled Nursing Facility
A patient signing a directive while in a skilled nursing facility must have a patient advocate or ombudsman designated by the Department of Aging sign as a witness, either as one of the two witnesses or in addition to notarization. The legislature added this because the custodial setting makes an independent check important.
Electronic Directives
California permits electronic advance directives under stricter rules. An electronic version must be acknowledged before a notary public; witnesses alone are not enough. Any digital signature has to be unique to you, verifiable, and linked to the document so that any later alteration invalidates the signature.2California Legislative Information. California Probate Code 4673
When Your Agent’s Authority Begins
By default, your agent cannot act until there is a determination that you lack capacity to make your own medical decisions, and the authority ends again if you recover.4California Legislative Information. California Probate Code PROB 4682 This is often called a springing power because the authority springs into effect only when needed.
You can override that default and give your agent immediate authority by saying so in the document. Some people managing a progressive illness prefer this so their agent can coordinate with doctors from the start instead of waiting for a formal incapacity finding.
Under the springing default, providers will usually want a physician’s written statement of incapacity before they treat your agent as the decision-maker. To keep this from stalling care at a critical moment, you can spell out exactly how incapacity should be determined, for example by requiring confirmation from one or two independent physicians.
You should sign the directive while your capacity is not in question. California presumes that every adult has capacity to create a directive and to designate an agent, and anyone contesting the document bears the burden of proving otherwise.5California Legislative Information. California Probate Code PROB 4657 A document signed well before any diagnosis is far harder to challenge than one signed after concerns have already surfaced.
What Your Agent Can and Cannot Decide
Unless you add restrictions, your agent steps into your shoes. They can consent to or refuse any treatment, choose or dismiss healthcare providers, approve diagnostic tests and surgical procedures, and direct whether to withhold or withdraw life-sustaining treatment, including artificial nutrition and hydration.6California Legislative Information. California Probate Code PROB 4683 The authority extends past death: your agent may authorize organ and tissue donation under the Uniform Anatomical Gift Act, consent to an autopsy, and direct disposition of your remains. If you have strong feelings on any of these, write them into the directive so your agent is not guessing.
How Your Agent Is Supposed to Decide
Your agent cannot simply substitute their own preferences. California requires the agent to follow your written healthcare instructions first, then your known wishes, and only when neither offers guidance may the agent act in your best interest while taking your personal values into account.7California Legislative Information. California Probate Code 4684 The more specific your written instructions, the less room there is for family conflict later.
Decisions Your Agent Cannot Make
No matter how broadly you draft the document, your agent cannot commit you to a mental health treatment facility or consent to convulsive treatment, psychosurgery, sterilization, or abortion on your behalf.1California Legislative Information. California Probate Code 4701 These limits are statutory and cannot be waived in the directive.
You can also impose your own limits. You might prohibit the withdrawal of specific treatments, require a second opinion before major surgery, or require that named family members be consulted. Any restriction you write in binds the agent.
Access to Your Medical Records
A healthcare agent recognized under California law qualifies as a personal representative under the federal HIPAA Privacy Rule, which means providers must treat your agent the same way they would treat you for access to protected health information, including reviewing records and directing copies to a third party.8U.S. Department of Health and Human Services. Individuals’ Right Under HIPAA to Access Their Health Information Access is limited to information relevant to the decisions the agent is authorized to make.9eCFR. 45 CFR 164.502 – Uses and Disclosures of Protected Health Information
No special HIPAA language is required in the directive, because federal law automatically grants personal representative status to anyone with authority under state law to make healthcare decisions. Some people still include a HIPAA authorization paragraph to smooth things over with cautious records departments. It is not legally necessary but can prevent delays.
Changing or Revoking the Document
You can revoke or update the directive at any time as long as you have capacity. California handles the two parts differently. To revoke your agent, you must sign a written statement or personally tell your supervising healthcare provider. To revoke other instructions in the directive, any method that communicates your intent will do.10California Legislative Information. California Probate Code PROB 4695
To change your agent, add new instructions, or revise existing ones, the cleanest approach is to execute a brand-new directive with the same formalities as the original. Handwritten edits to the old document are unreliable and invite a challenge. Once the new one is signed, notify your former agent, your current providers, and anyone holding a copy of the earlier version.
Divorce Revokes a Spouse Designation Automatically
If you named your spouse as agent and later divorce or annul the marriage, California automatically revokes the designation. You do not need to file anything. If you remarry each other, the designation is automatically revived.11California Legislative Information. California Probate Code PROB 4697 Anyone going through a divorce should name a new agent promptly, because the automatic revocation leaves you with no designated decision-maker in the meantime.
Using California’s Statutory Form
California publishes a free statutory form in Probate Code Section 4701. Part 1 is the power of attorney for health care, where you name your agent and alternates. Part 2 is where you write out specific treatment instructions. Additional sections cover organ donation and primary physician designation. You can use all or part of it, or use a different form entirely, as long as the signing and witnessing requirements are met.1California Legislative Information. California Probate Code 4701
The statutory form is a solid starting point for most people and does not require a lawyer. If you have a complex medical situation, a blended family, or specific wishes that do not fit the form’s checkboxes, an attorney-drafted directive can prevent ambiguity that fuels disputes later.
What Happens If You Don’t Have One
Without a directive, California gives you a short-term fallback. You can verbally designate a surrogate by telling your supervising healthcare provider, but that designation lasts only for the course of treatment, the duration of your hospital stay, or 60 days, whichever is shortest.12California Legislative Information. California Probate Code 4711 It is a stopgap, not a substitute.
If no surrogate is designated and no directive exists, family members or the hospital may need to seek a court-appointed conservatorship. The process is expensive, slow, and strips the conservatee of significant autonomy over where they live, what medical treatment they receive, and how their finances are managed. Attorney fees commonly run several thousand dollars, on top of court costs, a court-appointed attorney for the proposed conservatee, and possible bond premiums, and the process can take weeks or months while urgent decisions wait.
A signed directive avoids all of that. It costs nothing if you use the statutory form, takes less than an hour, and keeps control over who decides and how they decide in your hands.
How a POLST Differs From a Healthcare Directive
A POLST (Physician Orders for Life-Sustaining Treatment) form is not the same thing. A POLST is a medical order signed by a physician, not a planning document signed by you. It translates your treatment preferences into specific orders that emergency responders and hospital staff act on immediately, covering things like CPR, intubation, and comfort-focused care. POLST forms are meant for people with serious illnesses or who are frail and near the end of life. A healthy adult does not need one. An advance directive is appropriate for any adult, because an unexpected accident or illness can leave anyone unable to communicate. The two documents work together: the directive names your decision-maker and records your general preferences, while a POLST gives medical personnel concrete orders in an emergency.
If You Spend Time in Another State
Your California directive should be honored in most other states, which typically recognize an out-of-state directive if it was valid where signed or if it meets the local requirements. Outright refusal is rare. The more realistic issue is interpretation, since terms and rules vary and an instruction that reads one way in California may read differently elsewhere. If you spend significant time in a second state, have a local attorney review your California directive or prepare a second one that complies with that state’s rules.