But she said that when people do get real offers of financial reward in exchange for medical tests, they should make sure they understand the deal.
"I don't think incentives are 'bad,'" Blumenthal-Barby said. "If the aim is to help you be healthier and cut down on overall health care costs, they could be good."
But, she added, "people may just think about the money. They need to be a little cautious and read the fine print, too."