Marcus J. Hampers, MD, MBA, is on the clinical staff in the emergency department of Dartmouth-Hitchcock Medical Center, Lebanon, N.H., and also on the teaching staff at the affiliated Geisel School of Medicine, but he is not practicing much emergency medicine these days. Instead, he is leading the rollout of a network of 10 urgent care centers in Vermont, New Hampshire and Maine, two of which opened in June, with two more scheduled to open this month.