Detroit-based St. John Health System accelerated its management transition when its two top executives relinquished their hospital duties this month and three other hospital administrators were promoted.
Glenn Wesselmann, 62, and Pat Wrenn, 63, will remain as chief administrators of St. John Health Sys-tem, a holding company, and will concentrate on strengthening and integrating St. John Health System's diverse medical assets into a unified, multihospital healthcare system.
In addition to their holding company responsibilities, Messrs. Wesselmann and Wrenn had run 607-bed St. John Hospital and Medical Center, St. John Health System's largest asset. Both men are nearing retirement.
"This is a succession plan," said John Lore, president and chief executive officer of the Sisters of St. Joseph Health System, an Ann Arbor-based healthcare holding company and owner of St. John Health System. He said Messrs. Wesselmann and Wrenn were "absolutely outstanding" administrators.
As part of the management changes, Timothy Grajewski, 49, was named president and CEO of 42-year-old St. John Hospital. He had been executive vice president and chief operating officer.
Paul Van Tiem was promoted to chief financial officer of the parent company while holding the same title for the hospital.
Kathleen Korbelak, senior vice president, has been assigned to work closely with Mr. Wrenn to integrate the system's three hospitals that have or will merge with the parent company.
Some or all of the three executives could be candidates for Mr. Wesselmann's job.
Daniel Megler, M.D., an ear, nose and throat specialist and incoming president of the medical staff, described the new administrators as "bright people," citing Mr. Grajewski for "great rapport" with the entire hospital staff.
Mr. Wesselmann, the key executive of St. John Health System and its predecessor company since 1979, is scheduled to retire in December 1995. Mr. Wrenn, executive vice president of St. John Health System since 1984, is due to retire in early 1996.
When Mr. Wesselmann became COO of the hospital in 1979, it had net operating revenues of $54.9 million and 2,300 full-time-equivalent employees. Today, the entire hospital system has 5,674 full-time-equivalent employees and 1993 revenues of $321 million.
A search for Mr. Wesselmann's successor will begin shortly, a spokesperson said.