 Walgreens is closing stores across the U.S. On Thursday, CEO Timothy Wentworth admitted the current pharmacy model is not sustainable. One of the problems, he says, is shoppers just aren't shopping. Walgreens has nearly 9,000 stores across the U.S. The drugstore chain says it plans to close underperforming stores as part of a multi-year strategy. The Postmillennial reports they will be closing over 2,000 stores.