Nielsen has been covering the pharmaceutical industry most of his life, reporting on everything from ANDAs to Zika vaccines. He strongly believes that the user fee system needs to stop using Roman numerals. His favorite stories are ones that help readers understand the personalities and policies that dictate whether their regulatory strategy succeeds or fails. A regular contributor to the Pink Sheet podcast, he also creates infographics and editorial feature images for articles. Before joining Pink Sheet he worked for Congressional Quarterly. Nielsen frequently moderates webinars and panels at industry conferences, and enjoys discussing R2-D2 almost as much as he enjoys talking about 351(k).