Dan Hixson has built Silvies Valley Ranch, which has two 18s when played on separate days. My recollection is that there are 27 greens so 9 greens get reused in the second day. Not a full regulation 18, but there are an additional 9 hole par 3, and 7 hole challenge course. Apparently Bar Run is also finished as they are taking 18 hole tee times on their website. Features include 2 biaritz greens, a boomerang green, a replica of The Pit hole, and on my tour, my tour guide, Slag, mentioned a redan green or redan like green site, but I don't remember the details.
So that's 3 from Oregon's own Dan Hixson.
EDIT: My bad! The website says Bar Run is open for play, and then gives an 18 hole green fee rate. When I look at the following pages of the website it says they are still using only 10 holes, and 18 will open this coming summer.