Are any of the 3 suggestions good?

Hi teachers. Could you please help me with how I can write this in the most natural way possible. Are any of the 3 suggestions good or would you write it in another way?

"The doctor called and said he needed to see me about something. It sounded urgent...

So I went to the hospital, and when I got over there he appeared with a very somber expression on his face." (1)

So I went over to the hospital, and then he appeared with a very somber expression on his face." (2)

So I went over to the hospital, where he appeared with a very somber expression on his face." (3)