Alva Review-Courier -

Three of corporate America's heaviest hitters — Amazon, Warren Buffett and JPMorgan Chase — sent a shudder through the health industry Tuesday when they announced plans to jointly create a company to provide their employees with high-quality, affordable care.

The announcement was short on details about precisely what the independent company will do. But given the three players' outsize influence — and Amazon's ability to transform just about everything it touches — the alliance has the potential to shake up how Americans shop for health care, and the stocks of insurance companies, drug distrib...