Relating to patients' rights, consumer protection, and directives for the provision of health care services; providing an administrative penalty.

HB 3588 allows Texas adults to create a written directive requiring that only a physician may diagnose and treat them, especially if they later become unable to communicate due to incapacity. The directive must be signed with two witnesses (one meeting specific qualifications) or notarized, and the patient must inform their attending physician, who must then include it in the medical record. This bill applies to all health care facilities and practitioners in Texas and establishes a new Texas Patients' Bill of Rights to help patients make informed decisions about their care. It focuses on clarifying patient rights and ensuring physician-led treatment under defined circumstances.