Dr bob want to reveal confidential health information about peter patient at trial what should dr invoke?

Dr. Bob should invoke the physician-patient privilege. This privilege protects confidential communications between a patient and their doctor. It ensures that patients can be open and honest with their doctors without fear of their information being shared without their consent. In the case of Dr. Bob, he is legally obligated to protect Peter's confidential health information and should not reveal it at trial without Peter's consent or a valid legal exception.