For five seasons, actor Paul Greene played the Hope Valley physician in the Hallmark Channel smash hit, bringing charm and medical expertise to the tight-knit town. Greene first joined the cast during Season 4, establishing himself as a valuable and dedicated member of the community. During his arc in Season 8 of "When Calls the Heart," Carson found himself contemplating a pivotal life choice: Remain in Hope Valley to marry Dr. Faith Carter (played by "Supergirl" star Andrea Brooks), or accept a prestigious surgical fellowship at Johns Hopkins. After an amicable split with Faith, Carson moved to Baltimore to pursue his career ambitions.