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Nashville Medical Research Institute

Investigators and Sub-Investigators


DR. RONALD E. PRUITT, a native of North Carolina, received his Bachelor of Arts degree with a double major in Chemistry and Psychology from the University of North Carolina at Chapel Hill. He earned his Doctorate of Medicine from UNC School of Medicine and completed an internship and residency in Internal Medicine in 1987 at the University of Alabama School of Medicine. He completed his fellowship in Gastroenterology and Hepatology at UAB in 1989 under the direction of Basil I. Hirschowitz, M.D., the inventor of the flexible fiberoptic endoscope prior to his joining Nashville Gastrointestinal Specialists. He is double Board Certified in Internal Medicine and Gastroenterology. Dr. Pruitt is a Fellow of the American College of Physicians, the American College of Gastroenterology, and the American Gastroenterology Association. He has published numerous papers on gastrointestinal disease and is the recipient of national awards from the American College of Physicians, the American Lithotripsy Society, and the American Gastroenterological Association. Dr. Pruitt is an Assistant Clinical Professor of Medicine at Vanderbilt University School of Medicine, Chief of Gastroenterology at Saint Thomas Hospital, and Chief Medical Officer of the Maria Nathanson Center of Excellence in Gastrointestinal, Pulmonary and Renal Medicine and Research. He is one of the world’s expert authorities in pancreaticobiliary endoscopy (ERCP) performing approximately 500 of these procedures each year. He is listed by his peers as one of Nashville’s most talented and respected physicians in Consumers’ Guide to Top Doctors, a publication of medicine’s best. Dr. Pruitt has been a partner in Nashville Gastrointestinal Specialists since 1989.


Danelle Jacobus, M.S.B.S., PA-C – Ms. Jacobus is a native of Westerville, Ohio. She graduated from Milligan College in East Tennessee with a major in biology and a minor in chemistry after doing a study abroad semester at the University of New South Wales in Sydney Australia. She continued her education at the Medical College of Ohio, completing a Masters of Science in Biomedical Science with a concentration in Physician Assistant studies. During her course of study she was recognized by Who’s Who in American Colleges and Universities. She also received the award for Outstanding Research during her master’s program. Upon graduation she completed a Fellowship in Hepatology specializing in Hepatitis C while working with Dr. Pruitt at Nashville Gastrointestinal Specialists where she began in March of 2000. She also works as sub-investigator on clinical research trials with Nashville Medical Research Institute.  She is currently on the board of the local chapter of the American Liver Foundation and is a member in good standing with the GIPA Academy

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