Abraham Louis Levin

He graduated from Blinn Memorial College in 1903 and subsequently earned his MD degree from Tulane University School of Medicine in 1907.

Levin completed post-graduate training in internal medicine and gastroenterology at Johns Hopkins University.

In addition to his private practice of medicine, Levin served in the US Army Medical Corps in World War I at Camp Beauregard in Louisiana.

Levin treated large numbers of trauma patients with gastrointestinal involvement during his military duty.

[2] Initially, Levin envisioned diagnostic uses of his nasogastric drainage device, such as for gallbladder disease.

Nasogastric tube (Levin type)
Use of the Levin tube in nasogastric intubation