Yout should try watching:

Surgeon Bong Dal Hee (was aired on 8tv a while ago) - Very nice, you get the excitement from the life of trainee surgeons. Way better than Grey's. Grey's has too much scandal lah and none on doctor-patient relation.

Thank You - Jang Hyuk starred in it. Very touching. Moved me to tears. Also medically related, though slightly less than bong dal hee.

Both dramas will have viewers hating the male lead at the begining but will fall in love with them as the show progresses.