In California, a medical power of attorney, also known as an advance health care directive, is a legal document that appoints a person to make health care decisions on behalf of an individual who is unable to do so themselves. The specifics of a medical power of attorney in California can be found in the California Law Revision Commission Reports.

The document designates an agent to make health care decisions for the principal and is only in effect when the person is incapacitated, unless otherwise stated. While it is within the rights of the agent to control visitors and communication with hospital staff, there are legal and ethical considerations, especially if family members feel their access is being improperly restricted.

Given the situation described, seeking legal counsel might be the best course of action to understand the specific rights and options under California law. If family members feel that the actions taken by the power of attorney are not in the best interest of their mother or are causing them distress, they may be able to challenge the POA arrangement in court, especially if there are concerns of undue influence. However, it's important to note that challenging a power of attorney can be a complex process.

Sources

Medical Power of Attorney - California Mobility[PDF] California's Health Care Decisions Law Fact SheetCalifornia power of attorney requirements | LegalzoomThe California Health Care Power Of Attorney Simplified (5 FACTS) | Opelon LLP- A Trust, Estate Planning And Probate Law FirmRule 2-100 Communication With a Represented Party - State Bar of California[PDF] Comprehensive Power of Attorney Law

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