Faculty: Division of Gastroenterology
Faculty of the Division of Gastroenterology at MedStar Georgetown University Hospital offer the most advanced diagnostic and treatment techniques available.
To learn more about our faculty, follow the links below to access their MedStar Georgetown University Hospital faculty profiles.
Nadim G. Haddad, MD
Associate Professor of Medicine; Physician Executive Director and Regional Chief, Gastroenterology @ MedStar Georgetown University Hospital
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Texas Technical University Health Science Center, 1988
Internship: Georgetown University & Veterans Administration Medical Center, 1991
Residency: Georgetown University Medical Center, 1991
Fellowship: Georgetown University Medical Center, 1993
Certification: Internal Medicine, 1992; Gastroenterology, 1995, 2008 (recertified)
Special Interests: Endoscopic ultrasonography, hepatobiliary, pancreatic gastrointestinal cancer and gastrointestinal bleeding
John Carroll, MD
Assistant Professor of Medicine; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Specialties: Gastroenterology
Medical Degree: Medical College of Wisconsin, 1993
Internship: Georgetown University, 1994
Residency: Georgetown University, 1996
Fellowship: Gastroenterology, Georgetown University Medical Center, 1999
Certification: Gastroenterology, 2001
Special Interests: Endoscopic ultrasound for digestive cancers, Barrett’s esophagus
Walid Chalhoub, MD
Assistant Professor of Medicine; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Balamand Medical School, 2005
Internship: Mount Sinai Medical Center, 2009
Residency: Mount Sinai Medical Center, 2011
Fellowship: MedStar Georgetown University Hospital, 2015
Special Interests: Advanced Endoscopy, Pancreaticobiliary diseases, EUS-ERCP, colon cancer detection and screening
Joseph James Jennings, MD
Assistant Professor of Medicine; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Georgetown University School of Medicine, 2012
Internship: MedStar Georgetown University Hospital, 2013
Residency: MedStar Georgetown University Hospital, 2015
Chief Residency: MedStar Georgetown University Hospital, 2016
Fellowship: Gastroenterology, MedStar Georgetown University Hospital, 2019
Certification: Internal Medicine, 2015; Gastroenterology, 2019
Special Interests: GI bleeding and anemia, colon cancer detection and screening, small bowel endoscopy
James H. Lewis, MD, FACP, FACG
Professor of Medicine and Director of Hepatology
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Specialties: Gastroenterology
Medical Degree: State University of New York. 1975
Internship: Baylor College of Medicine, 1976
Residency: State University of New York, Downstate Medical Center, 1978
Fellowship: George Washington University Hospital, 1960
Certification: Internal Medicine, 1978; Gastroenterology, 1981
Special Interests: Hepatology (viral hepatitis, hepatitis C, drug-induced liver disease), liver transplantation evaluation, liver and colon cancer screening
Thomas Loughney, MD
Professor of Medicine; Director of Endoscopy @ MedStar Georgetown University Hospital; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Georgetown University School of Medicine, 1989
Internship: Walter Reed National Military Medical Center, 1990
Residency: Walter Reed National Military Medical Center, 1992
Fellowship: Walter Reed National Military Medical Center, 1996
Certification: Internal Medicine, 1992; Gastroenterology, 1997
Special Interests: Endoscopy, biliary endoscopy, biliary disease, colon cancer detection and screening, pancreatic disease
Mark C. Mattar, MD, FACG, AGAF
Professor of Medicine; Program Director GI Fellowship Training Program; Director, Inflammatory Bowel Disease Center; Quality Improvement Officer, GI; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Virginia Commonwealth University School of Medicine, 2004
Internship: Olive View – UCLA Medical Center, 2005
Residency: Olive View- UCLA Medical Center, 2007
Fellowship: Georgetown University Hospital, 2010
Certification: Internal Medicine, 2007; Gastroenterology, 2010
Special Interests: Inflammatory bowel disease, Crohn’s disease, Ulcerative colitis, Microscopic colitis, Celiac disease
Caren S. Palese, MD
Associate Professor of Medicine; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Mount Sinai School of Medicine, 2000
Internship: Georgetown University Hospital, 2001
Residency: Georgetown University Hospital, 2003
Fellowship: Georgetown University Hospital, 2007
Certification: Internal Medicine, 2004; Gastroenterology, 2007
Special Interests: Therapeutic endoscopy, esophageal manometry, gastrointestinal cancers, colon cancer screening
Shervin Shafa, MD
Assistant Professor of Medicine; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Brody School of Medicine at East Carolina University, 2007
Internship: George Washington University Hospital, 2009
Residency: George Washington University Hospital, 2011
Fellowship: Georgetown University Hospital, 2014
Certification: Internal Medicine, 2011; Gastroenterology, 2014
Special Interests: Esophageal diseases, Esophageal Cancer, Barrett’s esophagus, Zenker’s diverticulum, Endoscopic mucosal resection, Cryoablation, RFA, esophageal strictures, Luminal Stenting, Achalasia treatment/POEM, and a list of esophageal conditions/disorders. I also see colon cancer screening and large polyps.
Priyanka Kanth, MBBS, MD, MSC
Associate Professor of Medicine; Director of GI Cancer Prevention Program @ MedStar Georgetown University Hospital; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Kasturba Medical College Mangalore, MAHE University, India, 2001
Internship: Kasturba Medical College Mangalore, MAHE University, India
Residency: University of Connecticut Health, Farmington, CT; Internal Medicine
Chief Residency: University of Connecticut Health, Farmington, CT; Internal Medicine
Residency: Royal Albert Edward Infirmary, UK; Colorectal and General Surgery
Fellowship: University of Utah Health in Salt Lake City; Gastroenterology
Certification: Internal Medicine; Gastroenterology
Special Interests: Colon Polyps; Serrated Colon Polyps; Hereditary Gastrointestinal Cancer Syndromes (including Lynch syndrome, familial adenomatous polyposis, juvenile polyposis syndrome, Peutz-Jeghers syndrome, serrated polyposis syndrome, hamartomatous polyposis syndromes, hereditary diffuse gastric cancer, gastrointestinal cancer genetics, and the prevention of colon cancer
Angelica Nocerino, AGRC MD
Assistant Professor of Medicine; Attending Physician
MedStar Georgetown University Hospital
2nd Floor, Main Building
Washington, DC 20007
(202) 444-8541
Medical Degree: Georgetown University School of Medicine, 2014
Residency: Lenox Hill Hospital, 2017
Chief Residency: Lenox Hill Hospital, 2018
Fellowship: Lenox Hill Hospital; Gastroenterology; 2021
Certification: Internal Medicine; Gastroenterology
Special Interests: Neurogastroenterology; Motility
Attending Physician @ MedStar Washington Hospital Center
MedStar Washington Hospital Center
106 Irving St NW, POB South, Suite 205
Washington, DC 20010
(202) 877-7108
Medical Degree: Albany Medical College, 2012
Residency: MedStar Georgetown University Hospital, 2015
Fellowship (Chief Fellowship): Drexel University College of Medicine, Gastroenterology; 2018
Specialty Fellowship: MedStar Georgetown University Hospital, Advanced Gastroenterology Therapeutics; 2019
Certification: Internal Medicine; Gastroenterology
Special Interests: benign and malignant diseases of the bile ducts, pancreas, and the pancreatic ducts; therapeutic endoscopy (ERCP, EUS)