"At LA Integrative Gastroenterology & Nutrition, Dr. Rahbar brings over 25 years of excellent technical skills in Endoscopy and Colonoscopy along with a Holistic Integrative approach to each patient - all under the same roof." Dr. Farshid Sam Rahbar is a leading integrative gastroenterologist in Los Angeles, California. Dr.Conditions‧Services‧Supplements‧Fees‧Must Read‧Forms & Incentives.