With an eye toward expanded services and expansion, Oceanside-based Mount Sinai South Nassau has announced changes to its senior leadership.

The leadership changes come amid a $500 million long-term strategic growth initiative designed to enhance service for patients across Long Island’s South Shore.

John Pohlman, the hospital’s senior vice president and chief financial officer, will take on the additional role of chief operating officer. He will also direct the hospital’s strategic planning. Pohlman succeeds Bill Allison, who recently retired.

Pohlman is “an experienced leader who has helped us maintain our position as a financially strong institution that provides top-quality care,” Dr. Adhi Sharma president of Mount Sinai South Nassau, said in a news release. “His operational skills and straightforward manner will help guide us as we continue to expand services for our patients.”

Ken Long, senior vice president for administration at the hospital, will take on the additional role of chief clinical integration officer. In this capacity, he we will continue to work with clinical leadership to oversee the hospital’s integration with the Mount Sinai Health System, bringing enhanced services to the South Shore.  This includes a comprehensive stroke program, and preparing for the opening of a new four-story patient pavilion next year that, pending regulatory submissions and approvals, will pave the way  for open-heart surgery.

“Our partnership with the Mount Sinai Health System has brought tremendous benefits to our patients, including expansion of access to clinical trials and improvements in cardiac, cancer, and neurological services,” Sharma said. “Ken Long has been at the forefront of those integrations, which involve countless and complicated behind-the-scenes moves. Ken’s stewardship has been key to making it happen.”

Long will continue to oversee service line strategic planning, program expansions, volume growth, and help with the hospital’s ongoing integration with the Health System and its other member hospitals. He will also oversee the planning, development, implementation, and maintenance of administrative services and departments as the hospital’s Senior Vice President for Administration.

A 455-bed hospital, Mount Sinai South Nassau employs more than 3,500 nurses, physicians, and support staff and has an annual operating budget of $600 million.

The health system recently opened the $35 million Mount Sinai Doctors-Long Beach multispecialty medical arts pavilion. The four-story $135 million Feil Family Pavilion and Fennessy Family Emergency Center expansion to the hospital is slated to open in 2024.