Hi teachers. Please help.

Hi teachers. I would like to know how I can say this in the most natural way possible. Are any of the 4 suggestions good or would you write it in another way (If yes, please let me know how)?

Also, would it be natural to say that "he was wearing a somber expression" instead of "he had a somber expression on his face" or is that only natural in written English and not in conversational English?

"The doctor at the hospital 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 to the hospital, and when I got over there he had a very somber expression on his face." (2)

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

So I went over to the hospital, where he appeared with a very somber expression on his face." (4)