 In 1940, Harlem Hospital granted Chinn admitting privileges, in part due to Mayor Fiorello La Guardia's push for integration in the wake of the Harlem Riot of 1935.In 1944, the Strang Clinic hired Chinn to conduct research on cancer, and she remained there for the next 29 years.The Society of Surgical Oncology invited her to become a member, and in 1975, she established a society to promote African-American women to attend medical school.