Dr. Jeffrey Zheng Hsien Ko, MD

Dr. Jeffrey Ko is a gastroenterologist and internal medicine physician who earned his medical degree from St. Louis University School of Medicine. He completed his residency at Cedars Sinai Medical Center, bringing 11 years of medical experience to his practice. His dual specialization allows him to provide comprehensive digestive health care while managing broader internal medicine concerns.

Dr. Ko practices at multiple locations throughout California, including West Hollywood and Sacramento, with affiliations at Cedars Sinai Medical Center, University of California Davis Medical Center, and Mercy General Hospital. He specializes in treating conditions such as hemorrhoids, colon polyps, and upper gastrointestinal bleeding. His expertise includes performing colonoscopies, upper gastrointestinal endoscopy, and lower gastrointestinal endoscopy procedures to diagnose and treat digestive system disorders.