McKesson Corporation is an American company distributing pharmaceuticals and providing health information technology, medical supplies, and care management tools. The company delivers a third of all pharmaceuticals used in North America and employs over 78,000 employees. McKesson had revenues of $238.2 billion in its fiscal year ending March 31, 2021. McKesson is based in Irving, Texas, and distributes health care systems, medical supplies and pharmaceutical products. Additionally, McKesson provides extensive network infrastructure for the health care industry; also, it was an early adopter of technologies like bar-code scanning for distribution, pharmacy robotics, and RFID tags. The company has been named in a federal lawsuit of profiting from the opioid epidemic in the United States. Throughout the COVID-19 pandemic, McKesson has expanded on its well-established credentials as key vaccine distributor, serving as the U.S. government's centralized distributor for hundreds of millions of COVID-19 vaccine doses and ancillary supply kits for over 1 billion doses across the United States. , McKesson was ranked #7 on the Fortune 500 rankings of the largest United States corporations, with revenues of $238.2 billion. History Founded in New York City as Charles M. Olcott in 1828 and later as Olcott, McKesson & Co. by Charles Olcott and John McKesson in 1833, the business began as an importer and wholesaler of botanical drugs. A third partner, Daniel Robbins, who had joined the enterprise as it grew, and who previously "was an assistant to the original partners," was the Robbins when the company was renamed McKesson & Robbins following Olcott's death in 1853. The company successfully emerged from the fraud by CEO Phillip Musica one of the most notorious business/accounting scandals of the 20th century—the McKesson & Robbins scandal, a watershed event that led to major changes in American auditing standards and securities regulations after being exposed in 1938. In 1967, Foremost Dairies, a company founded by James Cash Penney that had been headquartered in San Francisco since 1954, acquired McKesson & Robbins in a hostile takeover to form Foremost-McKesson Inc. The Foremost dairy operations were sold in 1982 and the name changed to McKesson Corporation but headquarters remained in San Francisco. In 1999, McKesson acquired medical information systems firm HBO & Company (HBOC). The combined firm operated as McKessonHBOC for two years. Accounting irregularities at HBOC reduced the company's share price by half, and resulted in the dismissal and prosecution of many HBOC executives. The firm's name