About Us

Our Physicians

University of Maryland Center physicians and staff are known for their expertise in the diagnosis, management and treatment of gastrointestinal (GI) and liver disease in patients of all ages. Learn more about their background and experience below.


Photo of Doctor Jean-Pierre Raufman, M.D.Jean-Pierre Raufman, MD
Paulson Professor of Medicine
Head, Division of Gastroenterology and Hepatology

Special Interests: Bile Acids; Peptic Ulcer Disease; Colon Cancer
Medical Degree: Albert Einstein College of Medicine
Residency: Montefiore Hospital, Bronx, NY
Fellowship: University of Michigan, Gastroenterology; National Institutes of Health, Digestive Diseases
Certification: Internal Medicine; Gastroenterology


Photo of Doctor Bruce Greenwald, M.D.Bruce D. Greenwald, MD
Professor of Medicine
Associate Head for Clinical Affairs
Special Interests: Esophageal Cancer; Barrett's Esophagus; Endoscopic Ultrasound
Medical Degree: University of Maryland
Residency: University of Virginia, Medicine
Fellowship: University of Maryland Medical Center, Gastroenterology
Certification: Internal Medicine; Gastroenterology

Inflammatory Bowel Disease


Photo of Doctor Raymond K. Cross, M.D., M.S. Raymond K. Cross, MD, MS
Professor of Medicine
Director, Inflammatory Bowel Disease Center

Special Interests: Inflammatory Bowel Disease; Crohn's Disease; Ulcerative Colitis; Telemedicine
Medical Degree: University of Pittsburgh
Residency: University of Maryland/Baltimore VA Medical Center, Internal Medicine
Fellowship: University of Maryland/Baltimore VA Medical Center, Gastroenterology
Certification: Internal Medicine; Gastroenterology


Photo of Doctor Leyla J. Ghazi, M.D. Leyla J. Ghazi, MD
Assistant Professor of Medicine
Associate Director, Gastroenterology Fellowship Training Program
Special Interests: Inflammatory Bowel Disease (Chron's and Ulcerative Colitis); Perineal Disease; Women's Issues in IBD
Medical Degree: George Washington University
Residency: Thomas Jefferson University Hospital
Fellowship: University of Maryland Medical Center
Certification: Internal Medicine; Gastroenterology


Seema PatilSeema A. Patil, MD
Assistant Professor of Medicine
Director, Gastroenterology Fellowship Training Program
Special Interests: General Gastroenterology; Inflammatory Bowel Disease
Medical Degree: University of Maryland School of Medicine
Residency: Beth Israel Deaconess Medical Center, Internal Medicine
Fellowship: University of Maryland, Gastroenterology
Certification: Internal Medicine; Gastroenterology


Sandra Maria Quezada

Sandra Maria Quezada, MD, MS
Assistant Professor of Medicine
Assistant Dean of Admissions
Special Interests: Inflammatory Bowel Disease, General Gastroenterology, Medical Education
Medical Degree
: University of Maryland School of Medicine
Residency:
University of Maryland Medical Center, Internal Medicine
Fellowship:
University of Maryland Medical Center, Gastroenterology and Hepatology
Certification: Internal Medicine, Gastroenterology


Leon Park McLean, MD, MPH, PhD
Assistant Professor of Medicine
Chief of Gastroenterology, UM Midtown
Special Interests: Chronic Diarrhea, Infectious Colitis, Inflammatory Bowel Disease (Ulcerative Colitis, Crohn's Disease, Microscopic Colitis), Short Bowel Syndrome
Medical Degree: Tufts University School of Medicine
Residency: University of MD Medical System
Fellowship: Cook County Hospital; University of MD Medical System
Certification: Internal Medicine, Gastroenterology

Interventional Endoscopy


Photo of Doctor Peter E. Darwin, M.D. Peter E. Darwin, MD
Professor of Medicine
Director, Interventional Endoscopy Program
Special Interests: Pancreatitis; Pancreatic Cancer; Pancreatic Disease; Therapeutic Endoscopy; Hepatobiliary Disorders; GI Cancers
Medical Degree: University of Maryland School of Medicine
Residency: University of Maryland Medical Center, Internal Medicine
Fellowship: University of Maryland Medical Center, Gastroenterology
Certification: Internal Medicine; Gastroenterology


Photo of Doctor Eric M. Goldberg, M.D. Eric M. Goldberg, MD
Associate Professor of Medicine
Director of Endoscopy
Special Interests: Biliary Tract Disease; Pancreatic Disease; Esophageal and Enteral Stenting; Endoscopic Mucosal Resection; Capsule Endoscopy
Medical Degree: Georgetown University School of Medicine
Residency: Beth Israel Deaconess Medical Center
Fellowship: Beth Israel Deaconess Medical Center, Gastroenterology
Certification: Gastroenterology


Photo of Doctor Lance T. Uradomo, M.D. Lance T. Uradomo, MD, MPH
Assistant Professor of Medicine
Director of Endoscopy, Baltimore VA Medical Center
Special Interests: Endoscopic Ultrasound; ERCP; Gastrointestinal Malignancies
Medical Degree: George Washington University
Residency: University of Maryland Medical Center, Internal Medicine
Fellowship: University of Maryland Medical Center, Gastrointestinal Medicine
Certification: Internal Medicine; Gastroenterology


Raymond E. Kim, MD
Assistant Professor of Medicine
Director of Endoscopy, UM Midtown
Special Interests: Pancreas and biliary tract disease, GI tract cancer, Endoscopic submucosal dissection (ESD), pancreatic cancer, achalasia, Per-oral endoscopic myotomy (POEM)
Medical Degree: Ajon University-School of Medicine, South Korea
Residency: University of Kansas Medical Center - Internal Medicine
Fellowship: George Washington University Hospital - Gastroenterology, University of Maryland- Advanced Endoscopy
Certification: Internal Medicine, Gastroenterology

Liver Disease and Transplant


Photo of Doctor Darryn R. Potosky, M.D.Darryn R. Potosky, MD
Assistant Professor of Medicine
Director of Hepatology
Special Interests: Liver Disease; Liver Transplantation; Endoscopic Treatment of Esophageal and Gastric Varices
Medical Degree: University of Maryland School of Medicine
Residency: University of Maryland Medical Center, Internal Medicine
Fellowship: University of Maryland Medical Center, Gastroenterology and Hepatology; University of Maryland Medical Center, Transplant Hepatology
Certification: Internal Medicine; Gastroenterology; Transplant Hepatology


Photo of Doctor William R. Hutson, M.D.William R. Hutson, MD
Professor of Medicine
Medical Director of Liver Transplantation
Special Interests: Liver Transplantation; Liver Diseases; Hepatic Malignancy
Medical Degree: West Virginia University
Residency: West Virginia University Hospital/Charleston Area Medical Center, Internal Medicine
Fellowship: University Health Center of Pittsburgh, Gastroenterology and Hepatology
Certification: Internal Medicine; Gastroenterology; Transplant Hepatology


Nathalie Urrunaga, MD, MS
Assistant Professor of Medicine
Special Interests: Liver Disease; Liver Transplant
Medical Degree: Universidad Peruana Cayetano Heredia - Peru
Residency: University of Texas Southwestern - Internal Medicine
Fellowship: University of Maryland Medical Center- Gastroenterology and Hepatology
Certification: Internal Medicine; Gastroenterology



Deepti V. Dronamraju, MD
Assistant Professor of Medicine
Special Interests: Liver Disease; Liver Transplant
Medical Degree: Tufts University School of Medicine
Residency: Icahn School of Medicine at Mount Sinai- Internal Medicine
Fellowship: Icahn School of Medicine at Mount Sinai- Gastroenterology
Certification: Internal Medicine; Gastroenterology

General Gastroenterology


Photo of Doctor Guofeng Xie, M.D. Guofeng Xie, MD, PhD
Assistant Professor of Medicine
Special Interests: Colon Cancer; GERD; Esophageal Motility Disorders
Medical Degree: Beijing Medical University
Residency: University of Arkansas for Medical Sciences, Internal Medicine
Fellowship: University of Maryland, Gastroenterology
Certification: Internal Medicine; Gastroenterology


Dr. Eric Von RosenvingeErik C. von Rosenvinge, MD
Associate Professor of Medicine
Chief of Gastroenterology, Baltimore VA Medical Center
Special Interests: Colon Cancer Prevention; Gastrointestinal Infections; Improving the Comfort of Endoscopy; C. difficile colitis
Medical Degree: New York University School of Medicine
Residency: David Grant USAF Medical Center, University of California Davis Medical Center, Internal Medicine
Fellowship: University of Maryland Medical Center, Gastroenterology and Hepatology; National Institutes of Health, Gastroenterology and Hepatology
Certification: Internal Medicine; Gastroenterology


Megan Willard, MDMegan Willard
Assistant Professor of Medicine
Medical Degree:  University of Maryland School of Medicine
Residency: University of Maryland Medical Center, Internal Medicine
Fellowship:  University of Maryland Medical Center, Gastroenterology and Hepatology
Certification:  Internal Medicine, Gastroenterology

For patient inquiries, call 1-800-492-5538 or If you prefer, you may call the division directly at 410-328-5780.

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