He has also served as a referee for over 50 academic journals, and has been a member of the Board of Reviewing Editors of Science Magazine since August 1991.

Primary areas of focus have included labor and development economics, global health and demographics, and statistics and econometrics.

[4] In July 1995, Bloom began serving as the acting executive director of the Harvard Institute for International Development.

[4] Following the end of the 1996 academic year at Columbia, Bloom joined the staff of Harvard School of Public Health, where he served as the Professor of Population and Health Economics for three years, before being named the Clarence James Gamble Professor of Economics and Demography, where he has remained since June 1999.

He has also served as a referee for over 50 academic journals, and has been a member of the Board of Reviewing Editors of Science Magazine since August 1991.

Bloom is an Adjunct Trustee of amfAR, The Foundation for AIDS Research and member of the Board of Directors of Population Services International, which addresses HIV/AIDS on a global scale.

Along with fellow member, Joel Cohen, he serves as a co-director of an American Academy of Arts and Sciences educational project.