The actor also appeared in the short-lived musical Great to Be Alive! before being cast in the role of Kenneth Gibson in the 1950 Irving Berlin hit Call Me Madam, which starred Ethel Merman as fictional U.S. ambassador Mrs. Sally Adams. It was Nype's duet with Merman on “You're Just in Love” that stopped the show nightly. For his performance, Nype received a Theatre World Award as well as his first Tony Award for Best Featured Actor in a Musical.
Nype followed that Tony-winning turn with a role in the comedy Wake Up, Darling, which played five performances at the Ethel Barrymore Theatre in 1956, and a 1957 revival of Carousel that cast him as Enoch Snow.
The 1958 musical comedy Goldilocks, which starred Elaine Stritch and Don Ameche, brought Nype his second Tony for Best Featured Actor in a Musical.
Nype was also seen on Broadway in a 1963 revival of Brigadoon, the original farce Once for the Asking (also in 1963), a replacement Cornelius Hackl in the original staging of Hello, Dolly! (when Merman joined the cast in the title role), and the six-performance run of the 1967 comedy The Girl in the Freudian Slip (featuring a young Bernadette Peters among its cast).
Nype's final Broadway outing was as a replacement in the 1980 Tony-winning revival of Morning’s at Seven.
On the silver screen Nype appeared in Love Story (1970), Can't Stop the Music (1980), Balboa (1983), and The Stuff (1985), while his TV credits included Frontiers of Faith, Look up and Live, Dorothy, Fantasy Island, One Day at a Time, Who's the Boss?, and Murder, She Wrote, among others. He also was seen in TV stagings of One Touch of Venus and Kiss Me, Kate.
In 1953 Nype married Diantha Lawrence, who passed away in 2015. He is survived by his son Russell, his stepson Richard Mander, and his stepdaughter Melanie Mander as well as two grandchildren.