As an international student, you are required to have health insurance coverage from your home country. When you visit a medical or dental clinic in Seoul or outside of Seoul, you will be required to pay for all of your services up front and then to send your receipts to your health care provider later.
All clinics listed below will accept you as a walk-in. That is, you will not need an appointment. You can copy the address in Korean to show it to a taxi driver. The average cost of a doctor’s visit is about \20,000 and any tests you will have such as a blood tests, x-rays, etc. will be charged separately.