1. Daniel Hale Williams

Daniel Hale Williams [Image from Wikipedia]
Williams is also credited with being the founder of the nation’s first non-segregated hospital, Chicago’s Provident Hospital.
Originally from Pennsylvania, Williams became an apprentice for a physician after moving to Janesville, Wis., to run a barber shop with one of his five sisters. Williams was enthralled with the work of Dr. Henry W. Palmer and continued to follow him for two years until he attended Chicago Medical College (now Northwestern University Medical School) in 1880. After graduating in 1883, Williams opened his own medical office in Chicago.