People Ellen J. MacKenzie peoplepill id: ellen-j-mackenzieEJM 9 views today 16 views this weekEllen J. MacKenzieBiographyListsAlso ViewedListsEllen J. MacKenzie is in following listsBy categoryJohns Hopkins Bloomberg School of Public Health alumniJohns Hopkins Bloomberg School of Public Health facultyMembers of the National Academy of MedicineRutgers University alumniFrom our partnersSponsoredEllen J. MacKenzie