Dr. Yang is a dedicated, knowledgeable physician. I have seen GI doctors all over the Pacific Northwest in the past 20 years--and feel I finally found the most thorough and competent GI doctor available in this area.

Submitted Aug. 19, 2011

He refused to acknoledge that a accidental pharmaceutical overdose could be the cause of my abdominal pain. My web search said the substance (phenolphthalein) could cause liver damage or be fatal. I felt intimidated and made fun of.

Submitted June 24, 2009