Paul S. Viviano, chairman of the board and CEO of Alliance Healthcare Services, is replacing Thomas E. Jackiewicz as CEO of UC San Diego Health System effective June 1.

In January, Jackiewicz became senior vice president and CEO for USC Health, where he oversees the university’s private-practice clinical activities, including the Keck Hospital of USC, USC Norris Cancer Hospital and Keck Medical Center of USC.

Viviano, 59, who also will serve as associate vice chancellor for Health Sciences, has had ties with Alliance since 2003. During his tenure he was credited with defining a strategic path, expanding the company’s technology platform and optimizing the investment value of the organization.

“Mr. Viviano has a solid track record of strategic leadership and entrepreneurism that drives results,” Dr. David Brenner, vice chancellor for Health Sciences and dean of the School of Medicine at UCSD, said in a statement. “He has a hands-on philosophy of working with clinicians and researchers to ensure outstanding patient care — exactly the kind of skills needed to elevate levels of innovation and quality as UC San Diego Health System grows.”

Mark Talamini, chairman of the Department of Surgery at UC San Diego who participated in a CEO search committee, said the process of finding Jackiewicz’s replacement took about six months and involved 60-plus nationwide candidates. Talamini said Viviano’s experience in CEO roles for more than 25 years at various institutions and medical centers and his familiarity with the California medical care environment weighed favorably in considering him for the UCSD position.

“He has a great breadth of experience with organizations and that’s going to serve us well,” Talamini said.

Viviano has previously served as president and CEO of USC University Hospital and USC/Norris Cancer Hospital, a private research and teaching hospital staffed by faculty from the Keck School of Medicine at the University of Southern California. USC/Norris is a National Cancer Institute-designated comprehensive cancer center with more than 200 basic scientists, physicians and other Keck School of Medicine faculty members.

Viviano has also served as executive vice president and CEO of the St. Joseph Health System in Orange, which is comprised of 14 acute hospitals, six medical practice foundations, three home-health agencies and multiple ambulatory clinics. From 1985 to 1987, he was president and CEO of the 300-bed nonprofit acute care Long Beach Community Hospital and from 1980 to 1985, he served as CEO of Los Alamitos Medical Center.

A Los Angeles native, Viviano earned his master’s degree in public administration-public health at UCLA.

“His experience in the business world in an entrepreneurial role is particularly suited to San Diego, which is a very entrepreneurial environment,” Talamini said. “He will bring that additional dimension to his position.”