Mr. Deininger leads strategy, growth and operational oversight for AdventHealth’s East Florida Division, encompassing seven hospitals, two freestanding emergency departments, and more than 75 practice locations across Florida’s Flagler, Lake and Volusia counties. He oversees more than 11,000 team members who deliver nearly 1.3 million patient visits each year. Since assuming the role in 2025, he has guided the division through sustained growth while strengthening access to care, advancing clinical quality and ensuring disciplined stewardship across a rapidly growing region. Under his leadership, multiple East Florida Division hospitals have earned consecutive “A” safety grades from The Leapfrog Group and national recognition from U.S. News & World Report. AdventHealth Fish Memorial in Orange City, Fla. has also earned a 5-star quality rating from the Centers for Medicare & Medicaid Services, the only hospital in its county to do so.
