Generally any competent person over 18, but this person is usually a close relative or close friend. Your doctor usually does not want to be the proxy. Please write the phone number of the proxy on the Advance Directive.
This article is intended to be helpful and informative. But even common legal matters can become complex and stressful. A qualified estate planning lawyer can address your particular legal needs, explain the law, and represent you in court. Take the first step now and contact a local estate planning attorney to discuss your specific legal situation.