Marcus Welby, M.D. From 1969-1976, kindly Dr. Welby (Robert Young) treated patients with intelligence and compassion. With his assistant Dr. Steven Kiley (James Brolin) and nurse secretary Consuelo Lopez (Elena Verdugo) by his side, Marcus Welby, M.D. tackled medical and social issues that were ahead of their time. Every episode is here, along with bonus features. Season 1: 23 hrs, 7 DVDs. Season 2: 19 hrs, 6 DVDs.