Dr. Thomas F. O'Brien

Brookline, Norfolk, Massachusetts, United States

Is your surname O'Brien?

Research the O'Brien family

Share your family tree and photos with the people you know and love

  • Build your family tree online
  • Share photos and videos
  • Smart Matching™ technology
  • Free!

Thomas Francis O'Brien

Current Location:: Brookline, Norfolk, Massachusetts, United States
Birthplace: Worcester, Worcester, Massachusetts, United States
Immediate Family:

Son of Thomas Francis O'Brien, Sr. and Esther M. O'Brien
Husband of Ruth Reardon O'Brien
Father of Private; Private; Conan O'Brien; Kate B. O'Brien; Private and 1 other

Occupation: Epidemiologist, Harvard Medical School professor
Managed by: Private User
Last Updated:

About Dr. Thomas F. O'Brien

Dr. Thomas F. O'Brien is a noted American epidemiologist, associate professor at the Harvard Medical School, and director of the infectious disease department at Brigham & Women's Hospital in Boston. He is also known for being the husband of noted attorney Ruth Reardon O'Brien and father of entertainer Conan O'Brien.

According to his Harvard biography:

Following graduation from Harvard Medical School, Thomas O'Brien was a medical resident for two years at Peter Bent Brigham Hospital, Boston, a Harvard University Mosley Fellow for one year at Cambridge University, England, an active duty Captain in the U.S. Army Medical Corps for two years, and a research fellow in the Department of Microbiology at Harvard Medical School for another two years before a final year as a senior medical resident at Peter Bent Brigham Hospital. Following this he was appointed Director of the Division of Infectious Diseases and Director of the Microbiology Laboratory at that hospital, in which he now serves as Senior Physician in the Division of Infectious Diseases and Medical Director of the Microbiology Laboratory. His dual role as clinician consulting on complicated infections and director of a laboratory identifying the microbes causing the infections and measuring their resistance to antibiotics prompted Dr. O'Brien to focus on the problems of antibiotic resistance and especially their molecular basis and epidemiology. This work led to the designation of his laboratory as World Health Organization Collaborating Center for the Surveillance of Antimicrobial Resistance and the development of software called WHONET, which now links laboratories in resistance surveillance networks in more than eighty countries. On May 5, 2005 he joined the committee of a project called New Directions in the Study of Antimicrobial Therapeutics: New Classes of Antimicrobials.

Dr. O'Brien earned a full scholarship to Harvard Medical School, receiving his MD in 1954. He has been continuously publishing and conducting major medical research since 1959. His current research interests are anti-bacterial agents, cross infection, microbial drug resistance, enterobacteriaceae, R-factors, world health, and bacteria.

view all

Dr. Thomas F. O'Brien's Timeline

January 28, 1929
Worcester, Worcester, Massachusetts, United States
April 18, 1963
Brookline, Norfolk County, Massachusetts, United States
Boston, Suffolk, Massachusetts, United States