John Hagen’s The Mission: A Gripping Tale of Courage, Conspiracy, and Compassion

Beyond the Scalpel: John Hagen’s “The Mission” Blends Medical Thrills with Real-World Turmoil.

A Thrilling Adventure Awaits in John Hagen’s The Heir

Living for the moment

I thought I escaped unscathed…

Dr. John Hagen: A Pioneer in Laparoscopic Surgery and Medical Education

Dr. John Hagen – Unleashing Potential in Laparoscopic Surgery and Education

Beyond Borders: Dr. John Hagen’s Global Impact in Surgical Training and Humanitarian Efforts

Surgeon, Mentor, Author: The Epic Journey of Dr. John Hagen