I recommend a pediatrician in front of Irvine First in Hogye-dong.

It is the pediatrician we go to whenever my child is sick, and the head doctor is kind.

The staff are kind, so it is a hospital I visit every time.

There is also an IV clinic on the second floor, so you can receive IV fluids there as well.

The wait is usually long, so you need to register via Ttokdak before you go.