Gregory Harrison Bio
Gregory Neale Harrison (born May 31, 1950) is an American actor and producer whose career on television has stretched from the late 1970s into the 2020s. He first won wide recognition as the young surgeon Dr. George Alonzo “Gonzo” Gates on the CBS medical drama Trapper John, M.D. (1979–1986), and he later earned notice as the ruthless business tycoon Michael Sharpe on the CBS primetime soap Falcon Crest (1989–1990). Over the years he has built a steady presence in television movies and Hallmark Channel projects, and in recent years he joined the long-running ABC soap opera General Hospital in the recurring role of Gregory Chase.
Early Life and Background
Gregory Neale Harrison was born on May 31, 1950, in Avalon, California, a small coastal town on Santa Catalina Island. He was the middle child of Ed Harrison, a ship’s captain and poet, and Donna Lee Nagely, an aspiring dancer. His parents eventually divorced, and Harrison grew up with an older sister, Kathleen, born in 1948, and a younger brother, Christopher, born in 1961.
During the Vietnam War era, Harrison served for two years in the United States Army as a medic, an experience that took him away from California before he began his professional acting career. His upbringing on Catalina Island, combined with the discipline of military service, gave him a varied foundation that shaped his early interest in performance and storytelling.
Path to Acting
After completing his military service, Harrison set his sights on acting and began pursuing roles in the mid-1970s. His early training and willingness to audition for science fiction and genre projects helped him land the title role in the television adaptation of Logan’s Run (1977–1978), based on the well-known dystopian novel and film. The series ran for a short time on CBS but gave him valuable on-camera experience.
Following Logan’s Run, he appeared in the NBC miniseries Centennial (1978–1979), based on James Michener’s epic novel of the American West, playing the role of Levi Zendt. He also made an early guest appearance on M*A*S*H, a connection that soon led to one of the most important casting opportunities of his career. These early television credits positioned him as a young actor with leading-man appeal, ready for a longer commitment to a series.
Gregory Harrison Career
Early Career (1973–1978)
Harrison began working professionally in 1973, taking on small parts in television as he built his résumé. His first major showcase came with the science fiction series Logan’s Run (1977–1978), where he played the title character in a short-lived CBS adaptation of the popular novel and film. Although the series was cancelled after one season, the role introduced him to a national audience and demonstrated his comfort with leading material.
He quickly followed that with a prominent role in the NBC miniseries Centennial (1978–1979), an ambitious adaptation of James Michener’s sweeping novel about the settlement of the American West. The miniseries gave him the chance to play Levi Zendt, a character who appears across many decades of the story. Together, these two early projects established Gregory Neale Harrison as a promising young television actor ready for a long-running series.
Breakthrough (1979–1990)
Harrison’s breakthrough arrived in 1979 when he was cast as Dr. George Alonzo “Gonzo” Gates on Trapper John, M.D., a CBS spin-off of the classic series M*A*S*H. He played the young surgeon assistant to Dr. Trapper John McIntyre, portrayed by Pernell Roberts, and the role made him a familiar face on American television for seven seasons. He remained with the show until the middle of its seventh season, when he chose to leave for new opportunities, and the series concluded its run at the end of the 1985–1986 season.
After Trapper John, M.D., Harrison stayed busy with high-profile television movies, including the 1981 TV movie For Ladies Only, in which he played a stripper named John Phillips. The role turned him into a popular figure with female and gay audiences during the 1980s. In 1986 he spoofed that image in the miniseries Fresno, a parody of the primetime soap Falcon Crest that featured him shirtless at every opportunity.
The Fresno parody led directly to his next major role, when he joined Falcon Crest in its final season (1989–1990) as the scheming business tycoon Michael Sharpe. When Falcon Crest ended, the series’ parent studio, Lorimar Television, cast him in the CBS sitcom The Family Man, where he played a single fireman raising four children with the help of his father-in-law, played by Al Molinaro. Despite efforts by CBS to build an audience, The Family Man was cancelled after a single season.
Notable Works and Milestones
Beyond his signature television roles, Harrison starred with Eric Roberts in the 1996 film It’s My Party, a drama based on the true story of a man in the late stages of AIDS who organizes a farewell gathering for friends and family. From 1999 to 2009, he played the lead role of Oliver Caldwell in each of the three films in the Au Pair trilogy. Since 2015, he has portrayed Joe O’Toole, the father of Oliver, in the Hallmark Channel expansion films of Signed, Sealed and Delivered, and from 2020 to 2024 he played Gregory Chase on General Hospital. Since 2021, he has also appeared in the recurring role of Phillip Buckley on 9-1-1. On stage, he played Billy Flynn in touring and Broadway productions of Chicago, appeared as Benjamin Stone in the Broadway revival of Stephen Sondheim’s Follies, and starred in the original Broadway production of Kander and Ebb’s musical Steel Pier.
Gregory Harrison Family
Gregory Neale Harrison was raised by his father, Ed Harrison, a ship’s captain and poet, and his mother, Donna Lee Nagely, an aspiring dancer. His parents later divorced, and he grew up with an older sister, Kathleen, and a younger brother, Christopher.
Personal Life
Harrison married actress Randi Oakes on December 21, 1980, after meeting her while competing on a 1979 edition of Battle of the Network Stars, where he represented CBS and she represented NBC. The couple kept their marriage secret from the public for several years. They are the parents of four children: daughters Emma Lee (born 1985), Lily Anne (born 1989), and Kate (born 1991), and an adopted son, Quinn Edgar. Since 2025, his youngest daughter Kate, a model, has been married to actress Chloë Grace Moretz. The family originally lived in Sherman Oaks, California, but since the early 1990s they have made their home in Southern Oregon, first in Gold Beach for fifteen years and later in Eugene. Harrison has spoken openly about a cocaine addiction he developed during the 1980s, which he overcame with the help of the Betty Ford Center.