I'm with the EPIK program and I was told that I had to go to one of two designated hospitals for my check. Paid 100,000 for mine at Haeundae Hospital. Pretty ridiculous if you ask me.
Here's the thing. My wife almost had to pay for hers too, but she had her coworker talk to them and inform the nurse at the hospital that it should be free for foreigners who are part of the National Medical Insurance program.
Anyone else get a freebie? How much did you pay?