With clinics and healthcare centers sprouting along U.S. Highway 27 in Florida, the area is being dubbed a "medical destination." Billboards and business signs line the highway advertising dozens of cancer-treatment and eye-care centers, chiropractors, dentists, and podiatrists. And these providers are attracting people from the area where Lake, Orange, Osceola and Polk counties meet. More than 100,000 people called this "Four Corners" home at the end of 2007. By 2020, it is estimated that the population will top 250,000, and the healthcare industry is booming as the population grows.