She is best known for playing Kelly Gregg in the American sitcom television series Bachelor Father.

Her siblings, William Henry "Bill Jr.," Donna, Kerry, Hugh, Kevin, Brian and Kelly, all acted as children.

[5] Corcoran began acting in 1951, appearing in the film Apache Drums, playing the role of the Child.

[6] She also had roles in Dr. Kildare, Hans Christian Andersen, Channing,[7] Gidget Goes to Rome, Cavalcade of America, Mr. Novak,[8] and So This Is Love.

[6][9] Ronald Reagan recommended Corcoran for the role of Kelly Gregg on the new CBS television series Bachelor Father.