The California Corporate Giant You Never Heard Of

Mysterious McKesson, a Massive Health Care Conglomerate, Keeps a Low Profile in the Heart of San Francisco

California is so big that you don’t need to be a mouse to hide here. You can be a giant elephant, and still escape notice.

Californians have little sense of some of the largest and richest institutions in our state. For example, here’s a straightforward trivia question that, I’ve found, stumps even Californians who know the state quite well: What is the second-richest company in California after Apple?

“Facebook?” Nope. “Google?” Wrong.

The answer is: McKesson.

You’ve never heard of it? You’re not alone (though you probably don’t work in health care).

McKesson is a …