I also went to ㅇㄷㅇㅇㅇ, ㅇㄹ, and ㅇㅈ in Apgujeong. (See previous post) All three places felt fairly specialized in their own ways, but at 431, although the director seemed trustworthy, the clinic itself did not feel professional.
The consultation manager was kind, and although the director was not exactly friendly, he did take CT images and examined them thoroughly in his own way. However, I found it strange that if I paid in cash, I had to personally withdraw that cash in 10,000/50,000 won bills (and of course no cash receipt was possible). I arrived 5 minutes before my consultation time, but both the manager consultation and the director consultation were delayed so much that I left the clinic 2 hours later..... hahahaha It made me wonder why they even scheduled an appointment time in advance if it was going to be like this haha
Anyway, I developed distrust toward the clinic overall, so I decided to rule this place out.