Frank died Sunday at a hospital near his home, the Los Angeles Times reported Tuesday. His funeral was planned for Wednesday.
Frank is credited with putting two anchors into a single news broadcast for NBC's "The Huntley-Brinkley Report" back in the 1956, the Times said.
He was also known for his hard-hitting news documentaries such as the 1962 report, "The Tunnel," about 59 Germans who escaped through a secret passage under the Berlin Wall.
Frank was president of NBC News from 1968 to 1972 and from 1982 to 1984.
He is survived by his wife and two sons.
Sophia Loren celebrates 80th birthday