Audra McDonald has solely been a screen actress.
Audra Ann McDonald ( born July 3 , 1970 ) is an American actress and singer . She has won six Tony Awards , more performance wins than any other actor , and is the only person to win all four acting categories.Best Actress in a Play , Best Actress in a Musical , Best Featured Actress in a Play , and Best Featured Actress in a Musical . She starred as Dr. Naomi Bennett on the ABC television drama Private Practice . Porgy and Bess is an English-language opera composed in 1934 by George Gershwin , with a libretto written by DuBose Heyward and Ira Gershwin .