At Mass General and the Brigham, picking outsiders as presidents may be the best way to end old rivalries

Executive churn isn’t typically a good look. But the time is right for a changing of the guard at Mass General Brigham’s premier Boston hospitals.

Massachusetts General Hospital’s president, Dr. Peter Slavin, said Tuesday he would step down after 18 years in the role, an announcement made a little more than a month after his counterpart at Brigham and Women’s Hospital, Dr. Betsy Nabel, ended her 11-year run.

Both leaders chose to call it quits after long and successful stints in grueling jobs. No organization likes to lose such talent, but Nabel and Slavin had deep roots at the institutions