Good work on them all. Some feedback being #10, I think the eagle gets lost in the "E", Love #11, not a fan of the blue in #9, and I don't really like the apple or the red in #7...but again, #11 is awesome!
I'm sorry for my entries #12 and #13, look really bad. Please check my new concepts #16 is more simple and clever: this represent dental+river eagle in a icon easy to remember!
Liked #16, 17, and 18 but what I would ask to improve on with #17 and 18 is the "R" in River. It's cool looking, but I think it would be even better if it wasn't so bold. I moved your other entries out because I thought they were getting too "busy". I appreciate all your effort, however!