Sigma Pi Phi is generally consiered to be the first African-American Greek-lettered organization. Sigma Pi Phi was founded in Philadelphia, Pennsylvania, on May 15, 1904. The founders included two doctors, a dentist and a physician . When Sigma Pi Phi was founded, black professionals were not offered participation in the professional and cultural associations organized by the white community. Sigma Pi Phi has over 5,000 members and 112 chapters throughout the United States and the West Indies.