Marcus Welby, M.D. on ABC

Robert Young plays Dr. Marcus Welby, a dedicated family physician who made house calls a priority in life. From week to week Welby was tasked with some of the most devastating disorders and serious situations an M.D. can face, but confronted them with a fierce honesty and dedicated compassion that made him a virtual superhero with a stethoscope. But he couldn't do it alone. Enter Dr. Steven Kiley, portrayed by the strapping and very new James Brolin in his first regular television role.

Robert Young plays Dr. Marcus Welby, a dedicated family physician who made house calls a priority in life. From week to week Welby was tasked with some of the most devastating disorders and serious situations an M.D. can face, but confronted them with a fierce honesty and dedicated compassion that made him a virtual superhero with a stethoscope. But he couldn't do it alone. Enter Dr. Steven Kiley, portrayed by the strapping and very new James Brolin in his first regular television role.