This national professional fraternity was established at Tulane University and merged with Kappa Psi in 1917.

Delta Omicron Alpha was established in 1907 at the College of Medicine of Tulane University in New Orleans, Louisiana.

[2] Delta Omicron Alpha became a national fraternity with the creation of Beta chapter at Columbia University in 1908.

[3] Delta Omicron Alpha merged with the medical and pharmaceutical fraternity Kappa Psi on November 17, 1917.

[1] Delta Omicron Alpha's badge was a black enameled triangle, edged with jewels.