When Leslie Davis became chief of UPMC's hospital division in May, she kept her job as president of Magee-Womens Hospital in Oakland. With her iPhone always within reach, Davis jumps from office to office, one day working in Oakland, the next day at UPMC's Downtown headquarters. "I am always working. I just integrate life and work. But I love what I do, so it doesn't even feel like work," Davis said. The dual responsibilities happened by design. Health giant UPMC is consolidating top jobs across its 19-hospital network by asking presidents to oversee two facilities instead of one.