Massachusetts Medical Society
Founded1781; 240 years ago (1781)
FounderJohn Warren Edit this on Wikidata
HeadquartersWaltham, Massachusetts, United States

The Massachusetts Medical Society (MMS) is the oldest continuously operating state medical association in the United States. Incorporated on November 1, 1781, by an act of the Massachusetts General Court, the MMS is a non-profit organization that consists of more than 25,000 physicians, medical students and residents. It is currently based in Waltham, Massachusetts. The majority of the members live or practice in Massachusetts and the immediate vicinity.[1][non-primary source needed]


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The Massachusetts Medical Society is the owner and publisher of the New England Journal of Medicine which is the most widely read and cited medical journal in the world. The New England Journal of Medicine is also the oldest continuously published and circulating medical journal in the world and has an impact factor of 79.3[further explanation needed], which is the highest among all the medical journals in the world.[needs update] It also publishes the Journal Watch family of professional newsletters.[2][non-primary source needed] List of topics published in NEJM Journal Watch are:

In addition to its publishing activities, the key activities of the MMS include medical education for physicians, public health education for physicians and the public, legislative and regulatory advocacy for physicians and patients, and health policy research.


The charter of the MMS is signed by Samuel Adams as president of the Massachusetts Senate, and John Hancock as Governor of Massachusetts.


  1. ^ "History". MMS website. Retrieved 5 February 2014.
  2. ^ "Clinical Publications". MMS website. Retrieved 5 February 2014.