The Ministry of Health and Welfare supervises the operation of the NHI program through making and implementing policies.
As a non-profit institution, the National Health Insurance Service is a single insurer that provides health insurance to all citizens living in Korea. The NHIS is responsible for operating a health insurance program including --
The Health Insurance Review & Assessment Service (HIRA) evaluates the medical service fee, quality of health care, and adequacy of medical service.
All Koreans except those belonging to the lower-income group enroll to the compulsory health insurance. Healthcare providers may not refuse to treat NHI patients, and all enrollees should pay the contributions monthly.