Herrera returned to Louisiana State University Health Sciences Center, Shreveport, as Chair of the Department of Pathology, for over a decade. He has been active in nephropathology for over 30 years and is an accomplished writer, with more than 150 manuscripts related to renal pathology. He is an internationally renowned leader in renal pathology. A graduate of the University of Puerto Rico, School of Medicine. Dr. Herrera trained at Fort Sam Houston, Texas in Anatomic and Clinical Pathology and remained in the US Army serving at Walter Reed and William Beaumont Army Medical Centers. He retired from the Army as Colonel