Dr. Gabbert was trained in advanced endoscopy under the mentorship of world leaders and pioneers in gastroenterology, particularly with regards to the hepatobiliary system and pancreas. Previously an interventionalist at Banner MD Anderson Cancer Center in Phoenix, Arizona, Dr. Gabbert gained expertise in the treatment and palliation of a variety of gastrointestinal cancers. He developed a profound interest in performing therapeutic procedures on patients with altered anatomy, whether it be congenital or acquired as a consequence of previous surgical interventions.