Virtua named Dennis W. Pullin, an executive at MedStar Health in Baltimore, to succeed Richard P. Miller as president and chief executive of South Jersey's largest health system.

At MedStar, Pullin, 57, was president of MedStar Harbor Hospital in Baltimore and a MedStar senior vice president responsible for pharmacy, imaging, lab and pathology, behavioral health services, and transportation, Virtua said.

MedStar is a not-for-profit system of 10 hospitals in Maryland and Washington. It employs 30,000 and $5.3 billion in operating revenue in the fiscal year ended June 30, 2016. Virtua had $1.3 billion in revenue last year.

Miller, 64, has been president and CEO of Virtua since its formation in 1997 through the merger of West Jersey Health System and Memorial Health Alliance. In January, Miller announced his intention to retire this year.

Pullin will take over at Virtua this fall, after a period of working with Miller.