The National Health Insurance Service (NHIS) is a government program in South Korea that provides health insurance coverage to all citizens. Established in 2000, it aims to ensure that everyone has access to necessary medical services without facing financial hardship. The NHIS is funded through contributions from employers, employees, and the government. Under the NHIS, individuals can receive a wide range of medical services, including hospital care, outpatient treatment, and preventive services. The program helps to reduce the overall cost of healthcare for citizens, promoting public health and well-being across the nation.