This locum or permanent position seeks a Board Certified Gastroenterologist with specialty in radiation oncology for a stand-alone cancer center in Irvine, California. The role involves inpatient rounds, consultations, procedures including ERCP and EUS, and outpatient scopes depending on hospital volume, with a flexible schedule and 24-hour call availability. The position requires California state medical and fluoroscopy licenses, with assistance provided for credentialing and emergency temporary privileges.