William S.W Chang

William S.W. Chang is the Chief Legal Officer and Corporate Secretary at UpStream Healthcare, having previously served in senior roles at McKesson Corporation and the U.S. Department of Health and Human Services. 

At McKesson, Chang was Vice President of Regulatory Policy and Chief Legal Counsel. He led cross-functional teams that focused on enterprise priorities in key regulatory spaces. Chang advised the wide spectrum of McKesson’s businesses, including U.S. pharmaceutical distribution, medical-supply distribution, specialty and independent-community pharmacy, physician-practice management, prescription-technology services, medication access-and-adherence programs, and electronic health records.

At HHS, Chang served as Deputy General Counsel for public health, litigation, and investigations. Chang was one of the lead attorneys supporting Operation Warp Speed, working with public and private partners to build nationwide distribution and administration solutions for COVID-19 vaccines. Chang worked closely with the Deputy Secretary, the Centers for Medicare & Medicaid Services, the HHS Office of the Inspector General, and the U.S. Department of Justice to reform the Anti-Kickback Statute and Stark Law in order to facilitate value-based care.

At the Department of Justice, Chang led healthcare-fraud investigations of public and private companies and individuals, and his cases spanned several districts and involved multiple state and federal agencies as well as parallel civil proceedings.

Chang has been repeatedly recognized for his contributions to healthcare. In 2022, he was the National Winner of the American Pharmacists Association Friend of Pharmacy Immunization Champion Award. The award recognized Chang for his extraordinary contributions toward fully enfranchising the pharmacy workforce during the COVID-19 pandemic. For his public-health service, including during the pandemic, Chang received the Assistant Secretary for Health Exceptional Service Medal. The Medal is the highest decoration awarded to a civilian by the U.S. Public Health Service Commissioned Corps. For his service at the Department of Justice, Chang received numerous accolades. Among those accolades, he twice received the Assistant Attorney General’s Award for Distinguished Service; the HHS Inspector General’s Award for Excellence in Fighting Fraud, Waste, and Abuse; and the Commendation for Demonstrated Excellence from the FBI Director.