[4][5][6][7] Kellermann is known for his research on the epidemiology of firearm-related injuries and deaths, which he interpreted not as random, unavoidable acts but as preventable public-health priorities.
[8] Kellermann and his research have been strongly disputed by gun rights organizations, in particular by the National Rifle Association of America, although Kellermann's findings have been supported by a large body of peer-reviewed research finding that increasing gun ownership is associated with increased rates of homicide and violence.
[12] From 2006 to 2007 he was a Robert Wood Johnson Foundation Health Policy Fellow and joined the staff of the United States House Committee on Oversight and Government Reform.
He co-chaired the Committee on the Consequences of Uninsurance of the Institute of Medicine of the National Academy of Sciences, of which he is an elected member.
[4] Kellermann is a fellow of the American College of Emergency Physicians and an elected member of the US National Academy of Sciences in the Institute of Medicine.
He argued that their skills are currently under-utilized while not deployed, and that increasing the number of primary care providers would improve health outcomes and reduce costs.
[14] He coauthored additional studies published in the New England Journal of Medicine identifying firearm ownership as a risk factor for both homicide and suicide in the home.