| ○ | 
				The Japanese Society of Gastroenterology (財団評議員) | 
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				| ○ | 
				Japan Gastroenterological Endoscopy Society (評議員) | 
				 | 
			
			
				| ○ | 
				The Japanese Society of Internal Medicine (評議員) | 
				 | 
			
			
				| ○ | 
				Journal of Gastroenterology (Associate Editor) | 
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				| ○ | 
				International Journal of Clinical Oncology (Editorial Board) | 
				 | 
			
			
				| ○ | 
				Japanese Journal of Medical Ultrasonics (Editorial Board) | 
				 | 
			
			
				| ○ | 
				The Japanese Society of Gastroenterology (消化器病指導医) | 
				 | 
			
			
				| ○ | 
				Japan Gastroenterological Endoscopy Society (指導医) | 
				 | 
			
			
				| ○ | 
				日本臨床腫瘍学会 (がん薬物療法専門医) | 
				 | 
			
			
				| ○ | 
				日本超音波医学会 (超音波専門医) | 
				 | 
			
			
				| ○ | 
				日本臨床腫瘍学会 (がん薬物療法指導医) | 
				 | 
			
			
				| ○ | 
				The Japanese Society of Internal Medicine (認定内科医) | 
				 | 
			
			
				| ○ | 
				Japan Society of Clinical Oncology (臨床試験登録医) | 
				 | 
			
			
				| ○ | 
				日本がん治療認定医機構 (指導責任者資格保有) | 
				 | 
			
			
				| ○ | 
				日本消化器がん検診学会 (四国中国支部幹事) | 
				 | 
			
			
				| ○ | 
				The Japanese Society of Internal Medicine (理事) | 
				 | 
			
			
				| ○ | 
				The Japanese Society of Gastroenterology (理事) | 
				 | 
			
			
				| ○ | 
				日本臨床腫瘍学会 (理事) | 
				 | 
			
			
				| ○ | 
				Japan Gastroenterological Endoscopy Society (社団評議員) | 
				 | 
			
			
				| ○ | 
				Clinical Journal of Gatroenterology (Deputy Editorial Director) | 
				 | 
			
			
				| ○ | 
				日本家族性腫瘍学会 (暫定指導医) | 
				 | 
			
			
				| ○ | 
				日本消化器がん検診学会 (評議員) | 
				 | 
			
			
				| ○ | 
				The Japanese Gastroenterological Association (Director) | 
				 | 
			
			
				| ○ | 
				The Japanese Cancer Association (Councilor) | 
				 | 
			
			
				| ○ | 
				Japanese Association for Cancer Prevention (代議員) | 
				 |