Colonoscopy Beverly Hills – Gastroenterology Institute of Southern California | PRLog : PRLog (Press Release) – Mar. 29, 2012 – Besides his expertise in diagnostic and therapeutic endoscopy, Dr. Peyton Berookim is a procedures professional. Some of his many specialties include, Colon Cancer Screening, Upper Endoscopy, and Small Bowel Capsule Endoscopy. Ensuring a long healthy life takes an attention to detail. Dr. Berookim and The Gastroenterology Institute of Southern California pay meticulous attention to their patients by performing thorough exams and carrying out comprehensive procedures if necessary. Their commitment to patient care is second to none, and they come highly recommended by a number of hospitals and highly regarded medical professionals.