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Jack Chang-Chien, Feng M.D.
Attending Physician
Gastroenterology Internal Medicine
Education:
Ohio State University College of Medicine
Main Office:
949-364-5090,
圣约瑟夫健康中心,
27799 Medical Center Rd., #310,
Mission Viejo, CA 92691 
Clinic Intersts:
colon cancer screening, gastroesophageal reflux disorder (gerd), gastrointestinal bleeding, inflammatory bowel disease, evaluation of abdominal pain, and biliary/pancreatic diseases.
Certification: Board Certified in gastroenterology and hepatology, Internal Medicine
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