I've gone to Dr. Rothkopf ever since coming to Washington area.. he was recommended by a friend and I've since recommended him to many other friends. He's caring, good humored, skillful (as painless as is possible with dentistry-- I still hate the novocaine shots but no problem after that). TUp to date with all the latest materials he only problem is that he seems to be winding down his hours, so it can be hard to get an appointment. But his receptionist is really good about squeezing you in if you're really in need.
About Hygienist: I've had teeth cleaned by both hygienists in the office -- both very good, one friendly and gentle the other on the brusque side and a bit heavy-handed...