This is the 16th annual publication of the 100 Most Influential People in Healthcare ranking. Nominations for the recognition program, totaling more than 6,800 this year, were accepted from March 27 to April 28. The final ballot comprised 300 candidates based on those nominations. Readers then voted for their top five candidates from May 22 to June 23. Some 74,000 ballots were cast representing more than 370,000 votes for individual nominees. Readers' votes counted toward 50% of the final outcome; the senior editors at Modern Healthcare accounted for the other 50% to determine the final list and ranking. Due to the rapidly changing developments during Congress' attempts to repeal and replace the Affordable Care Act, Modern Healthcare editors added several influential lawmakers who were not among the 300 names on the ballot.