Birchfield and several other attorneys left the Martin, Ade, Birchfield & Mickler firm in 2000, joining McGuire, Woods, Battle & Boothe. On January 8, 2001, Martin, Ade, Birchfield & Mickler officially closed. Ten months later, Birchfield joined Lewis, Longman & Walker to concentrate on
eminent domain and land-use issues. In 2004, he and Bruce Humphrey formed Birchfield & Humphrey, P.A. Both attorneys were identified as among the best lawyers in their specialty by the rating service "Super Lawyers". Birchfield remained active as a lawyer until shortly before his death. == Civic involvement ==