Onmark

Onmark is a leading national group purchasing organization (GPO) and specialty services provider dedicated to supporting independent community oncology practices. As a division of McKesson Specialty Health, Onmark provides its members with access to a best-in-class contract portfolio for oncology drugs, supplies, and supportive care medications. The company offers the Onmark Select Program, which integrates clinical resources, advanced technology, and business operations support to help practices improve efficiency and patient care. By leveraging the collective purchasing power of thousands of physicians, Onmark enables community-based providers to remain competitive in a complex reimbursement environment. Its services are essential for the distribution and economic management of high-value specialty therapeutics in the United States.