Data science has emerged as a powerful tool in the healthcare sector, offering new opportunities to transform patient care and clinical research. The availability of vast amounts of health-related data, coupled with advanced analytics techniques, has enabled healthcare professionals and researchers to gain insights that were previously unattainable. This paper explores the impact of data science in healthcare, highlighting its contributions to patient care, clinical research, and the challenges that need to be addressed to fully harness its potential. Through a comprehensive review of literature, case studies, and real-world applications, this paper aims to provide an overview of how data science is revolutionizing healthcare.