Check out this list. I know there's several in So. Cal.
The best of the best is probably Dr. Gish in San Diego, a bit far for you to go.
http://www.medhelp.org/posts/Hepatitis-C/Who-is-your-good-doctor-/show/1715783
Having a strong accent or limited English doesn't mean Dr. Hu is any less of a doctor. However, you have to be comfortable with your hepatologist.
As far as clinical trials goes, call and ask. I know when I see my hepatologist, there's often trial information posted in the liver clinic.