The FDA has named former Dartmouth Medical School Dean Stephen Spielberg to the newly created position of deputy commissioner for medical products and tobacco, according to an internal letter sent to FDA employees obtained by Reuters.

The move is part of the FDA's goal to overhaul its management structure to better regulate an increasingly complex medical industry. The agency has also initiated a search to fill the newly created chief operating officer position, according to Reuters.

FDA Commissioner Margaret Hamburg promoted Deborah Autor, currently a director of the agency's compliance office, to the job of deputy commissioner for global regulatory operations and policy, according to the letter.

"The new organizational alignments more accurately reflect the agency's responsibilities, subject matter expertise and mandates in an ever more complex world, where products and services do not fit into a single category," Hamburg wrote in the letter.

Earlier this year, former Deputy Commissioner Joshua Sharfstein, who was appointed by President Barack Obama in 2009, left the agency to run the state of Maryland's health department. Under Hamburg and Sharfstein, the agency had become more aggressive in its oversight of companies for product-safety problems, shoddy manufacturing and misleading advertisements.