It is the medical assistant's responsibility to determine whether a patient has an advance directive in place.

It may be true or not but according to the Medical Assistant’s duties and responsibilities stated that he or she is responsible in doing administrative and clinical duties such as keeping, coding, filling, and organizing the files of the patient’s laboratories, admissions and other files that is related and relevant to what the physician’s instruction. He or she is also the patients liaison in which relaying the physician’s instruction.

a physical change is being made.