McKesson is a physician sales and service company serving medical clinics in Elgin, Illinois, with a focus on delivering high-quality products and expert advice to improve patient care. The company offers a wide range of pharmaceuticals and supplies, including branded, generic, and specialty medications, as well as field and inside sales representatives to support customers' needs. With over 1300 employees across the industry, McKesson is committed to helping healthcare professionals succeed in their daily operations through supply chain strategies designed to promote operational efficiency.