Generative Artificial Intelligence (GAI) is rapidly transforming the healthcare sector because the capacity to create new information, knowledge, and solutions is offered, rather than analyzing the ones that are already available. Unlike the classical AI models, which are designed to perform prediction and classification, generative AI involves complex algorithms such as; large language models, generative adversarial networks, and diffusion models to recreate the human-like reasoning and content-generation processes. It is finding application in clinical, administrative and research areas of healthcare and is significantly changing efficiency, accuracy and personalization of care. Clinical decision support is one of the most useful applications of generative AI. The GAI systems may be helpful to health care professionals summarizing the medical records, developing clinical notes, treatment plans recommendations, and helping with the diagnostic process with the help of a wide range of medical literature and information about the patient.