I recommend Kyunghee Palace Tunteun Pediatric and Adolescent Clinic for frenulum surgery.

Kyunghee Palace Tunteun Pediatric and Adolescent Clinic, located near Seodaemun Station, offers parking and provides parking support from the pediatrics department.

Since it is a pediatric department, there is a nursing room on one side and the hospital is also comfortable.

Both the doctor and nurse are very kind, but since it's not by appointment, the waiting time can be long, which seems to be a downside.

And Kyunghee Palace Tunteun Pediatric Clinic is a hospital that performs frenulum surgery, and it is recommended to visit after making a reservation for the procedure.