The Gastroenterology Institute of Southern California Believes in Digestive Health : Your digestive health is critical to your overall well-being. Whether you suffer from digestive disorders that are moderate, like constipation, bloating and lactose intolerance, or more serious ailments, like ulcers, hemorrhoids, Crohn’s disease, or colorectal cancer, your health and happiness are suffering. You should consult with a gastroenterologist. But, don’t call any GI doctor. Schedule an appointment with the best. Dr. Peyton P. Berookim is one of the leading Gastroenterologists. And, his Institute, in Los Angeles, provides the most state-of-the-art procedures to diagnose, treat and relieve you of your digestive problems.