Thomas G. Cotter, M.D., is an Assistant Professor in the Department of Internal Medicine at UT Southwestern Medical Center and a member of its Division of Digestive and Liver Diseases. He specializes in general hepatology and transplant hepatology, with interests in all liver diseases including alcohol-associated liver disease and nonalcoholic fatty liver disease. In addition, he performs regular screening and diagnostic endoscopies and colonoscopies.

Dr. Cotter earned his medical degree at the National University of Ireland in Galway, Ireland. He completed an internal medicine residency at the Mayo Clinic in Rochester, Minnesota, and then received advanced training in gastroenterology and transplant hepatology through fellowships at the University of Chicago Medical Center. He also holds a Master of Science in public health sciences from the University of Chicago.

Certified by the American Board of Internal Medicine in both internal medicine and gastroenterology, he joined the UT Southwestern faculty in 2021.

Dr. Cotter's research is primarily outcomes-based and is focused on improving the care of patients with alcohol-associated liver disease and of liver transplant recipients. He is the author of numerous publications and case reports, and he has delivered many invited lectures. Additionally, he has contributed to several books, including Clinical Dilemmas in Viral Liver Disease. He is currently a steering committee member on a NIH grant (AlcHepNet) and has a career development award from the American Association for the Study of Liver Diseases.

He is a member of several professional organizations, including the American Association for the Study of Liver Diseases, the American College of Gastroenterology, and the American Gastroenterological Association.

Education & Training
  • Medical School - National University of Ireland - Galway (2008-2013)
  • Residency - Mayo Clinic College of Medicine (2014-2017), Internal Medicine
  • Fellowship - University of Chicago Medical Center (2017-2020), Gastroenterology & Liver Diseases
  • Fellowship - University of Chicago Medical Center (2020-2021), Transplant Hepatology
Professional Associations & Affiliations
  • American Association for the Study of Liver Diseases
  • American College of Gastroenterology
  • American Gastroenterological Association
  • American Society of Addiction Medicine
Honors & Awards
  • Fellow Abstract Winner 2017, GUILD Conference
  • Fellows-in-Training Award for the Best Scientific Paper in the Inflammatory Bowel Disease (IBD) Category 2016, American College of Gastroenterology Annual Scientific Meeting
  • International Health Program Scholarship 2016, Mayo Clinic
  • Irish National Dr. Henry Hutchinson Stewart Medical Scholarship in Surgery 2013
Books & Publications
  • Alcohol-associated liver disease
  • Nonalcoholic fatty liver disease
  • Hepatitis C
  • Liver transplantation

Clinical Focus

  • Alcohol-associated liver disease
  • Liver Disease
  • Liver Transplant Medicine
  • Alcohol use disorder
  • Addiction medicine

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