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Thomas A Buchanan, MD
Professor of Medicine
Vice Dean For Research
Director of The CTSI,
Co Director, Diabetes and Obesity Research Institute
Endocrine Division Chief in The Department of Medicine
CSC 205 Health Sciences Campus Los Angeles
+1 323 442 1803


Thomas A. Buchanan, M.D., is Professor of Medicine, Obstetrics and Gynecology, and Physiology and Biophysics; Vice Dean for Research; Chief of the Division of Endocrinology and Diabetes in the Department of Medicine in Keck School of Medicine at the University of Southern California (USC) in Los Angeles. He is also the founding director of the Southern California Clinical and Translational Science Institute.

Scientifically, Dr. Buchanan conducts research into the etiology, pathogenesis, genetics and prevention of gestational and type 2 diabetes with a focus on diabetes in Hispanic Americans. Buchanan and colleagues have conducted longitudinal studies of high risk individuals to define patterns of change in insulin resistance and insulin secretion that lead to type 2 diabetes. Based on their findings, they then conducted the first successful type 2 diabetes prevention study in the United States. The biological information gained from that study pointed to a specific pancreatic beta cell defect that is heritable, a finding that formed the basis for a large family based study that has helped to identify the genetic basis for the metabolic abnormalities that lead to type 2 diabetes. In aggregate studies performed by Buchanan and his colleagues have contributed to important advances in clinical care for gestational diabetes and the prevention of type 2 diabetes in Hispanic Americans

Administratively, Dr. Buchanan has championed the development of clinical and translational research at USC, first through his role as director of the General Clinical Research Center (1996-2010). In 2010, he led the team that created the Southern California Clinical and Translational Science Institute, which in turn won a prestigious $56.8 million Clinical and Translational Science Award from the National Institutes of Health (NIH) to support and promote scientific discoveries and their application in real-life settings to health and health care. He built and directed one of the nation’s largest General Clinical Research Center (GCRC) programs. Since 2010, he has been director and principal investigator of USC’s new Southern California Clinical and Translational Science Institute (SC CTSI).

During his career, Dr. Buchanan has brought more than $180 million in extramural research funding to USC and the Keck School. He has been ranked as highly 1st at USC and 50th world-wide in annual NIH funding.

Dr. Buchanan received his medical degree from the University of Iowa, Iowa City, where he completed residency training in internal medicine. He completed his fellowship training in endocrinology and metabolism at Northwestern University Medical School, Chicago, Illinois.

A native of Iowa, Dr. Buchanan is an avid cyclist on the challenging Angeles Crest Highway near Los Angeles, a downhill skier and a dedicated family man.


Western Society for Clinical Investigation: Mayo Soley Award, 2014

University of California, Los Angeles: Josiah Brown Award, 2014

Irish Endocrine Society: Lilly Lecture, 2011

Association of American Physicians: Elected Member, 2006

American Diabetes Association: Distinguished Clinical Scientist Award, 2004

J Clin Endocrinol Metab: Endocrine Society-Pharmacia Award for Excellence in Published Clinical Research, 2002

University of Washington: John Ensinck Lecture, 2000

American Diabetes Association: Norbert Freinkel Award, 1999

NIH: Chair, Special Emphasis Panel, Hyperglycemia and Pregnancy Outcomes , 1995-1997

American Diabetes Association: Chair, Council on Diabetes and Pregnancy, 1995-1997

Canadian Diabetes Association: Novo-Nordisk International Lecture, 1995

Australian Diabetes Association: Medisense International Lecture, 1995

American Diabetes Association, Northern Illinois Affliate: Young Investigator Award, 1983

University of Iowa: Alpha Omega Alpha, 1978

Iowa State University: Phi Beta Kappa, 1974

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