Ruth Gottesman’s gift is the largest ever to a US medical school, according to a statement from the college. : The widow of a top Warren Buffett investor has donated $1 billion to Albert Einstein College of Medicine in the Bronx to cover tuition for all future students. Ruth Gottesman’s gift is the largest ever to a US medical school, according to a statement from the college. She’s the chair of Einstein’s board of trustees and was a longtime professor of pediatrics at the school. Her husband, David, died at 96 in 2022.