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Gastroenterology and Hepatology

Our Experts


Our board-certified gastroenterologists and nurse practitioners provide patient-centered, compassionate care to our patients alongside specially trained endoscopy nurses and staff who provide supportive care. Our experienced physicians utilize the most advanced technologies and training available to deliver the highest level of patient care for diseases affecting the gastrointestinal tract.

Our physicians and their areas of expertise include:

Catherine Bartholomew, MD
Chief, Division of Gastroenterology

General gastroenterolgoy
Gastrointestinal issues in women
Colonoscopy
Motility disorders
Digestive disorders
Swallowing disorders

Peter Ells, MD General gastroenterology
Liver disease
Hepatitis B and C
Hemochromatosis
Hubert Nietsch, MD Endoscopic ultrasound
ERCP
Gastrointestinal cancers
Pancreato-biliary diseases (conditions affecting the pancrease, bile duct and gall bladder)
Seth Richter, MD General gastroenterology and hepatology
Colon cancer
Gastroesophageal reflux disease (GERD)
Liver disease
Inflammatory bowel disease
Gastrointestinal cancers 
Vinay Sood, DO Pancreato-biliary diseases
Endoscopic ultrasound
Gastroesophageal reflux disease (GERD)
Liver disease
Inflammatory bowel disease
Gastrointestinal cancers
Xinjun Cindy Zhu, MD Digestive and motility disorders
Inflammatory bowel disease
Ulcerative colitis
Crohn's disease
Irritable bowel disease

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