Just looking at those paasages, and the ones I found, I'm not sure. Nothing I've seen says he is a creationist.

Many scientists believe in God, and believe in God's participation in the world around us--but that doesn't necessarily make them a creationist. I'd have to see more specific evidence.

To my mind, a creationist would deny the geologic record of millions of years of history, and insist that the events recorded in the strata could have been laid down in 10 thousand years or so. I think it would be a misapplication of the term creationist if one were to apply it, for instance, to someone who believes that God created the physical laws, and set the Big Bang in motion, and stays a passive observer.