Dr. Hahn is Chief Scientific Officer & Executive Vice President for Tri-Source Pharma.  Dr. Hahn leads the Tri-Source global new product development and regulatory approval strategy.

Dr. Hahn completed his BS in Animal Sciences, his DVM degree, his Small Animal Internship & Residency in Medical Oncology, and his PhD Cell Biology and Developmental Therapeutics at Purdue University.  He served on faculty at the University of Tennessee’s Department of Comparative and Experimental Medicine as Director Developmental Therapeutics Laboratory and the Medical Oncology.  He then served as Senior Partner of Veterinary Cancer Associates and Director of Oncology Services for Gulf Coast Veterinary Specialists in Houston, TX.   Later he became Chief Medical Officer and Research Director for Hill’s Pet Nutrition, a subsidiary of Colgate–Palmolive.

Professionally, Dr. Hahn is actively engaged in academic, national and international organizational committees; serves as an Editorial Board Member and Reviewer on many international scientific journals; chairs or advises Masters, PhD candidates, and medical residents; and has authored many peer-reviewed scientific manuscripts, chapters in veterinary textbooks, invited papers, abstracts, and scientific proceedings. He is recognized internationally in the discipline of Veterinary Medical Oncology and is an active leader in the animal health industry – particularly in the Kansas Animal Health Corridor.