TBA Law Blog


Posted by: Azya Thornton on Jul 14, 2025

Dr. Ralph Alvarado stepped down as commissioner of the Tennessee Department of Health on Friday after nearly three years in the role. According to the Daily Memphian, Gov. Bill Lee has appointed Tennessee State Epidemiologist John Dunn as interim commissioner, effective immediately. Nashville native Dunn joined the department in 2005 and previously served as deputy state epidemiologist and state public health veterinarian. He has been the state epidemiologist since 2019. He also is an adjunct professor at Vanderbilt University School of Medicine. “John is a committed public servant with decades of service to Tennesseans,” Lee said. “I appreciate his leadership during this time of transition and am confident he will serve with integrity.”