John P Geibel DSc, MD, MSc,AGAF

Professor of Surgery (Gastrointestinal) and of Cellular and Molecular Physiology; Vice Chair, Surgery; Director, Surgical Research; American Gastroenterological Association Fellow

Biographical Info

John Geibel is Vice Chairman of the Department of Surgery at Yale University School of Medicine and Director of Surgical Research and Professor of Cellular and Molecular Physiology. His early research training was in Innsbruck Austria where he worked in the Physiology Department and investigated renal physiology on the isolated perfused tubule model. He holds a Bachelors of Science Degree in Physiology, an MD and DSc degree as well as a Master’s of Science, and a Master’s of Arts Degree. He has also obtained his Dozent in Medicine from the University of Innsbruck. After obtaining his Dozent he went to Yale University first as a visiting fellow and then joined the faculty in both Surgery and Cellular and Molecular Physiology where he rose through the ranks to Professor in both faculties.

Academically, Professor Geibel’s active research interests are on the role of the Calcium Sensing Receptor (CaSR) in gastrointestinal physiology and pathophysiology. In addition, John Geibel has conducted research in fluid and electrolyte transport in the intestine where he was the first to identify that the colonic crypt can both actively secrete and absorb fluid. He has also identified 4 new transport pathways in the stomach that play important roles in acid secretion and may help to explain some of the hypersecretion of acid that occurs in patients. In addition he maintains a research program in the kidney where he was the first to identify a functional role for the H-ATPase in the proximal tubule; he was also the first to demonstrate a role for Angiotensin on the Na/H exchanger and Na/HCO3 and H-ATPase in the proximal tubule. Professor Geibel is the author of over 150 publications and presents his findings both nationally and internationally. He is the holder of 7 patents on the role of the calcium sensing receptor on gastrointestinal models and is currently actively working to begin clinical trials on a method to stop secretory diarrhea in the developing world based on targeting the calcium sensing receptor.

International Activity

  • Invited Plenary Speaker, World Nephrology Congress
    Cape Town, South Africa(2009 - 2009)
    Lecture on the Role of the Calcium Sensing Receptor in Kidney and Intestinal Tissues
  • Role of Electrolyte Transport in the Gut
    Milan, Italy(2009 - 2009)
    Invited Speaker International Society of Nephrology
  • The Intestine as a substitute for renal electrolyte transport
    Naples, Italy(2009 - 2009)
    Invited Speaker Borelli Conference on Renal Physiology
  • The gut and acid-base transport/homeostasis
    Florence, Italy(2009 - 2009)
    ISN Forefronts Symposium on Renal and Extrarenal Control of Acid-base Homeostasis in Health and Disease
  • Salzburg, Austria(2008)
    Invited Speaker, First Paracelsus Medical University Graduation
  • Salzburg, Austria(2007)
    Invited Speaker, World Congress on Cell Volume Regulation
  • Innsbruck, Austria(2006)
    Invited Plenary Speaker, World Nanotechnology Congress
  • Berlin, Germany(2003)
    Invited Guest Speaker, World Congress of Nephrology
  • Switzerland(2003)
    Invited Guest Speaker, International Nephrology Society, “ABC Cassette Binding Proteins”
  • Rio de Janerio, Brazil(2003)
    Invited Guest Speaker, International Biophysics Society Satellite Meeting
  • Zurich, Switzerland(2001)
    Invited Guest Speaker, Department of Physiology
  • Zurich, Switzerland(2001)
    Organizing Committee Forefronts in Nephrology Program, International Society of Nephrology
  • Innsbruck, Austria(2000)
    Invited Guest Speaker, University of Innsbruck
  • Argentina(1999)
    Invited Guest Speaker, International Congress of Nephrology
  • Tubingen, Germany(1998)
    Invited Guest Professor, University of Tubingen, Department of Physiology
  • Sao Paulo, Brazil(1997)
    Invited Guest Speaker Brazilian Government
  • Vienna, Austria(1997)
    Organizer of International Renal Electrolyte Symposia
  • Invited Guest Professor
    Rio de Janeiro, Brazil(1996)
    Brazilian Government
  • Naples, Italy(1995)
    Invited Guest Professor, Italian Government
  • Capri, Italy(1995)
    Invited Speaker, 2nd Boreli Congress of Nephrology

Education & Training

University of New Brunswick (1981)
University of Innsbruck (1983)
University of Innsbruck (1986)

Honors & Recognition

  • NIDDK NIH Chair Special Emphasis Panel KO-1 award
    ational Institute of Diabetes and Digestive and Kidney Diseases/National Institute of Health (2005)
  • America's Top Doctors
    Research Council of America (2012)
  • Who’s Who in Medicine and Healthcare
  • Americas Top Doctors
    Research Council of America (2011)
  • Who’s Who In the East
  • America's Top Doctors
    Research Council of America (2010)
  • Who’s Who In America
  • America's Top Doctors
    Research Council of America (2009)
  • Who’s Who In Science and Engineering
  • America's Top Doctors
    Research Council of America (2008)
  • Dozent der Medicine
    Universitat Innsbruck, Innsbruk, Switzerland (1992)
  • America's Top Doctors
    Research Council of America (2013)
  • National Research Service Award: NIH Post-Doctoral fellowship
    National Institute of Health (1985-1988)
  • America's Top Doctors
    Research Council of America (2014)
  • Young Investigator International Society of Nephrology travel fellowship
    Society of Nephrology (1987)

Professional Service

  • Associate Editor, American Journal of Physiology Cell (09/01/2000 - 09/01/2014)
  • Editor in Chief of Surgery book, eMedicine (01/01/1995 - 12/31/2014)

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