The term “artificial intelligence” (AI) refers to the intelligence demonstrated by machines. It is generally defined as creating machines that mimic cognitive functions typically associated with the human mind. This article will define and explore the various levels of AI and examine its historical development. We will also analyze the attention AI has received from different countries. Next, we will investigate the fundamental technologies underpinning AI. After that, we will discuss how AI transforms health care. Finally, we will consider whether AI has the potential to replace physicians and explore its future in the health care sector.