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Raymond Thomas Holzbach Edit Profile

educator , Gastroenterologist , author

Raymond Thomas Holzbach, American Gastroenterologist, author, educator. Diplomate National Board Medical Examiners, American Board Internal Medicine. Recipient Alexander von Humboldt Foundation Special Program award, 1978, 82.


Holzbach, Raymond Thomas was born on August 19, 1929 in Salem, Ohio, United States. Son of Raymond T. and Nelle A. (Conroy) Holzbach.


Bachelor of Science, Georgetown University, 1951. Doctor of Medicine, Case Western Reserve University, 1955.


Intern, assistant resident University Illinois Research and Education Hospitals, Chicago, 1955-1956. Senior assistant resident medicine Cleveland Metropolitan General Hospital, 1959-1960. Assistant chief gastroenterology Case Western Res University, 1961-1963.

Physician Gastroenterology Unit University Hospitals of Cleveland, 1961-1963. Instructor medicine Case Western Reserve University School Medicine, Cleveland, 1961-1964, clinical instructor medicine, 1964-1971. Head gastrointestinal research unit, associate physician division medicine St. Luke's Hospital, Cleveland, 1967-1973, director division gastroenterology, 1970-1973.

Head gastrointestinal research unit department medicine Cleveland Clinic Foundation, since 1973. Visiting professor numerous institutions including Mayo Medical School, 1974, University California, San Diego, 1977, University Heidelberg, 1978, University Pennsylvania, 1979, University Zurich, 1980, University Munich, 1982, University Minnesota Medical Center, 1985, medical centers, numerous Japanese universities, 1985, 92, Karolinska Institute, 1986, Royal Society London, 1987, Pennsylvania State University School Medical, University Helsinki, Rheinisch-Westfälische Technische Hochschule-Aachen, Düsseldorf, Federal Republic of Germany, University Groningen, Utrecht, University Amsterdam, The Netherlands, 1989, University Perugia, Italy, Virginia Commonwealth U.-Medical College Virginia, Richmond, Christ Church School Medicine, University Otago, New Zealand, State University of New York, Buffalo School Medicine, 1990, Pontifical/Catholic University Chile School Medicine, 1991, Hiroshima University School Medicine, 1992, Kyoto University School Medicine, 1992, School Medicine University Jikei, Tokyo, 1992, Tel Aviv University, Israel School Medicine, 1995, University Leipzig, Germany, 1996, University Heidelberg, Germany, 1996. Lecturer in field.


  • Diplomate National Board Medical Examiners, American Board Internal Medicine.


  • Other Work

    • Member editorial board Gastroenterology journal, 1984-1989. Contributor reviews and articles to medical journals.


Served to captain United States Air Force, 1957-1959. Fellow American College of Physicians. Member American Bar Association, American Gastroenterological Association (research committee 1976-1979), Control Society Clinical Research, American Association for Study of Liver Diseases, American Association for the Advancement of Science, American Society Biological Chemists, American Physiological Association, Biophysics Society, International Association Study of Liver, American Federation Clinical Research, Midwest Gut Club, American Society Clinical Nutrition, Ohio State Medical Association, Sigma Xi.


Married Lorraine E. Cozza, May 26,1956. Children— Ellen, Mark, James.

Raymond T. Holzbach

Nelle A. (Conroy) Holzbach

Lorraine E. Cozza

Mark Holzbach

Ellen Holzbach

James Holzbach