BENTONVILLE, Ark. — Walmart has made changes in its U.S. stores division’s management team that the company says are designed to streamline the leadership structure of the business.

Mike Moore, who has been serving as executive vice president of Neighborhood Markets at Walmart U.S., will assume responsibility for Walmart’s more than 3,400 domestic Supercenters as executive vice president of that business.

Julie Murphy, previously executive vice president of the retailer’s Walmart West division, will assume the role of executive vice president of Neighborhood Markets at Walmart U.S. The retailer has just over 600 Neighborhood Market outlets.

“Mike and Julie are outstanding leaders whose long-term experience within Walmart operations has equipped them to take on these expanded roles” Walmart U.S. president and chief executive officer Greg Foran and chief operating officer Judith McKenna told Walmart employees in an email.

Walmart is also simplifying its leadership structure, eliminating a layer of management.

Murphy’s previous post overseeing Walmart’s western division will not be filled, nor will the post of executive vice president of Walmart’s East division, which had been filled by Joaquin Gonzalez Varela, who is retiring effective June 15. Instead all U.S. stores will report directly to McKenna.

Also leaving Walmart is Pam Kohn, who serves as executive vice president of Walmart ­Realty.

With her departure, which is effective June 2, the company will align the Walmart U.S. Realty team so that it also reports to McKenna.

JP Suarez will assume leadership of Walmart Realty as its senior vice president.