Never heard of it? You’re not alone. McKesson is “a massive corporation hiding in plain sight,” Fortune wrote recently. Its headquarters hides in a conspicuous place — at Post and Market Streets in San Francisco. That a company can be both so big and so unknown shows how the tech sector has warped Californians’ sense of what matters in business.
McKesson is not only California’s second-largest company, with nearly $200 billion in annual revenues, but also the fifth-largest company in America. A massive health care middleman, McKesson distributes pharmaceuticals and other supplies from manufacturers to doctors and hospitals.