Bochy, 62, underwent a heart procedure in February 2015 to insert two stents, and he was hospitalized last summer with an undisclosed illness that forced him to miss a game in Miami.
Widely considered a future Hall-of-Fame candidate, Bochy has won three World Series titles and has amassed 1,853 regular-season victories, second among active managers to Washington's Dusty Baker (1,863).
Chris Haft has covered the Giants since 2005, and for MLB.com since 2007. Follow him on Twitter at @sfgiantsbeat and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.