module nationality article_title education name occupation
profession hospital president 1965-1974 field = work_institutions = memorial sloan -- = kettering cancer center specialism = research_field = prizes = clinical assistant in surgery , 1952-1965 , american john m. walker
 yale physicians and surgeons , 1936 university , 1931 ; columbia university college of john mercer walker , sr. . major , united states army , world war ii
john m. walker

dr. john mercer walker , sr. -lrb- january 15 , 1909-august 16 , 1990 -rrb- was an american physician and investment banker .
a member of the prominent bush-walker family , he was a maternal uncle of us president george h.w. bush .
