Home Scientists Daniel Callahan Daniel Callahan Scientist Daniel Callahan (born July 19, 1930) is an American philosopher in the field of biomedical ethics. Personal facts Birth dateJanuary 01, 1930 NationalityUnited States EducationHarvard UniversityYale UniversityGeorgetown University facebook tumblr linkedin twitter reddit google+ Search Scientist Field of studyEthicsPhilosophyMedical ethicsBioethicsHealth policy Topical connections Amy GutmannPolitician Allan M. BrandtScientist Daniel Callahan on Wikipedia Daniel Callahan External resources http://www.thehastingscenter.org/About/Staff/Detail.aspx?id=1282