Eric Mankin, a family medicine physician, has resigned as president of Main Line Health’s Care, the primary care network serving the Philadelphia suburbs. He had been in the role since 2013 and was responsible for overseeing 500 physicians and over 200 advanced practice providers.

Mankin’s last day as president was June 30, and he continues to practice as a primary care physician at the Main Line HealthCare practice in Newtown Square. Donald Klingen, a family physician who also serves as the system’s chief medical information officer, has taken over as interim president of the primary care network.

As part of a series of leadership changes at Main Line Health, a nonprofit system that owns four hospitals, Brian Corbett, the system’s general counsel since 2001, announced his retirement last month and will be succeeded by his deputy, Della Payne, in the fall. Leigh Ehrlich replaced long-time chief financial officer Mike Buongiorno in the winter.

Despite facing a $50 million operating loss for the nine months ending March 31, Main Line Health saw a significant improvement compared to the $114 million loss reported for the same period the previous year.