Feng, Jack Chang-Chien, M.D.
Gastroenterology

Providence Health

27799 Medical Center Rd.
Mission Viejo CA 92691
Phone: 949-364-5090
Fax: (949) 542-8710
colon cancer screening, gastroesophageal reflux disorder (GERD), gastrointestinal bleeding, inflammatory bowel disease, evaluation of abdominal pain, and biliary/pancreatic diseases.