Sean Slovenski is the Walmart president for U.S. health and wellness, a $36 billion division that already fills over 400 million prescriptions and operates 3,000 vision centers.  Walmart was the first pharmacy to offer prescriptions for as little as $4, and then began cutting its own health care costs with partnerships like the Cleveland Clinic and offering free health screenings.  Now they have opened large health centers in the Atlanta area, with flat fees prominently displayed, for dental, medical and eye care, X-rays, hearing checks and some diagnostic testing.  “We have taken advantage of every lever we can to bring the price of doing all of this down more than any hospital or group practice could humanly do…our goals, just like in the stores, is to get the prices as low as we can.”  Walmart says their model lowers the cost of delivering service by about 40%.