South Korea has seen some massive interest in LL in the past 3 years with hundreds or even thousands of people doing LL every year, but even 5 years ago nobody seem to have known there was a surgery for increasing their height. For example let's see the next available surgery date for the "big 3" surgeons in Korea:
Dr. Lee Dong Hoon: Probably everyone knows him since he has a huge social media presence. There's no exact number but he probably has done 1000s of cosmetic LL surgeries. His next available LL surgery is 5/1/2024 ( yes he has 2 years worth of LL already scheduled ), but if you look at his personal forum 3 years ago his average wait time would have been few months.
Dr. Lim Chang Moo: He has done over 3,900 cosmetic limb lengthening surgery and considered the most experienced in Korea. He is considered to be the 2nd choice for South Koreans before Dr. Lee. His next available appointment is December 2022 ( 6-7 months wait time ). His past patients describe his hospital a LL factory because he does a lot of surgery ( one source says 2-3 per surgery day ).
Dr. Ju Hwan Chung: He's the least popular of the three but he has lot of cases under his belt ( near 1000 probably ). He's most notable for having special events and discounts. His wait time is about the same as Dr. Lim.
There are lot of other unnamed clinics that do LL as well, but they are not very known and don't really specialize in cosmetic LL surgery. In fact the only known case of death after cosmetic LL in Korea was from a hospital that didn't specialize in LL and didn't treat the patient with the standard DVT prevention protocols.