The Center for Colonoscopy Excellence, a division of San Francisco Gastroenterology, is the Bay Area's premier option for colon cancer screening and prevention. Founded by board-certified gastroenterologist Dr. Frank Farrell, the Center for Colonoscopy Excellence focuses exclusively on screening colonoscopy. Our procedures are performed at Golden Gate Endoscopy Center, offering patients the region’s top-rated colonoscopy doctors at a convenient San Francisco Bay Area location