Xavier Llor, MD, PhD

Associate Professor of Medicine (Digestive Diseases); Medical Director, Colorectal Cancer Prevention Program; Co-Director, Cancer Genetics and Prevention Program

Physician Biography

After obtaining his MD degree from the Autonomous University Barcelona, Dr. Llor trained in basic research and Internal Medicine at the University of Chicago and completed his GI fellowship at the University of Illinois at Chicago. He complemented his training with a PhD degree in molecular biology from the University of Barcelona. A clinically active gastroenterologist, Dr. Llor’s research and clinical interests relate to colorectal cancer. He has a very active basic and translational research program mainly focusing on two different aspects of colorectal cancer: hereditary and familial forms, and disparities in colorectal cancer. This work has resulted in over 60 scientific publications in this field. He has made seminal contributions to the field of Lynch syndrome diagnosis as well as in the definition of other non-polyposis syndromic colorectal cancer cases. Some of his most recent work is bound to make a decisive contribution to the understanding of disparities in colorectal cancer.

Dr. Llor is the co-Director of the Smilow Cancer Genetics and Prevention Program and the Medical Director of the Colorectal Cancer Prevention Program at Yale University and Smilow Cancer Center and he sees patients at Yale. He is a member of the leadership council and Chair of the Education and Training Committee of the American Gastroenterological Association. He is commonly invited to lecture in colorectal cancer genetics in the US and abroad and is a member of the National Comprehensive Cancer Network guidelines committee for colon cancer screening and hereditary/familial colorectal cancer.

Clinical Interests

  • Gastrointestinal Neoplasms
  • Genetics
  • Colorectal Neoplasms

Patient Care

Accepts new patients? Yes
Patient Type: Adult
Referrals: From patients or physicians

Patient Care Organizations

Internal Medicine: Digestive Diseases

Yale Cancer Center: Gastrointestinal Cancers Program

Yale Medicine

Board Certifications

  • Gastroenterology AB of Internal Medicine (2007)

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Contact Info

Xavier Llor, MD, PhD
Patient Care Location
Cancer Genetics and Prevention ProgramYale New Haven Hospital Saint Raphael Campus
1450 Chapel Street, Ste 107/109

New Haven, CT 06511
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Mailing Address
Digestive Diseases333 Cedar Street/LMP 1080
PO Box 208019

New Haven, CT 06520-8019