3 Best Gastroenterologists in Jackson, MS

“ Dr. James A. Underwood, Jr., obtained his Doctor of Medicine from the University of Mississippi. He completed his internship and residency in Internal Medicine at Johns Hopkins Hospital in Baltimore, MD. He also completed his fellowship in Gastroenterology at Vanderbilt University in Nashville, TN. James A. Underwood, Jr., has numerous memberships, including diplomat of the American Board of Internal Medicine, the Mississippi State Medical Association, and the American Gastroenterological Association. James A. Underwood, Jr., joined GI Associates in 2001 and is a gastroenterologist at the Flowood GI Associates and Endoscopy Center and the Madison GI Associates and Endoscopy Center. ”

“ 2026 Highlights: Dr. Paul B. Milner is a gastroenterologist at GI Associates & Endoscopy Center in Flowood, Mississippi. He joined GI Associates in 1995 and is board-certified in gastroenterology and internal medicine. His training includes an internal medicine residency at the University of California, Davis Medical Center and a gastroenterology fellowship at the Ochsner Clinic in New Orleans. Dr. Milner is also a Clinical Investigator for the Mississippi Center for Clinical Research. He has received various honors and awards and is a member of numerous professional associations, including the American Gastroenterology Association. ”

“ Dr. Michelle Petro is a board-certified physician in internal medicine and gastroenterology. She earned her medical degree from the University of Mississippi School of Medicine. Dr. Michelle Petro completed both her Internal Medicine residency and her Gastroenterology and Hepatology Fellowship at UMMC. She is a member of the American Society of Gastrointestinal Endoscopy, American College of Gastroenterology, American Gastroenterology Association, and Mississippi State Medical Association. Dr. Michelle Petro has been active in research and has co-authored numerous papers. She has an innate sense of professionalism and concern for her patients’ health and well-being. Dr. Michelle Petro practices at GI Associates offices in Flowood and Madison. ”