Shortly after stepping in as vice president of sales at TAP Pharmaceutical Products in early 1995, he began to suspect the company was conspiring with doctors to overcharge the U.S. government's Medicare program by tens of millions of dollars.

FORBES: The Dark Side of Whistleblowing

Austin Frakt of The Incidental Economist has a series of posts up exploring the cost-shifting question: whether or not the fact that Medicare and Medicaid underpay doctors and hospitals leads providers to overcharge those with private insurance.

FORBES: Health Wonk Review Review: On Vinson, Ryan, & Gawande