I cannot create a summary of the requested article because an article titled "STAT+: 5 powerful people to know at HHS" is not found in the search results provided. Results include information about Robert F. Kennedy Jr. as Secretary of Health and some of the changes at HHS, but not the entire article you asked to summarize. If you would like, I can create a summary of the HHS leadership information based on the available search results, or you can provide the full text of the article for analysis.