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Washington DC VA Medical Center

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Gastroenterology and Hepatology


Contact Us

Emergency calls
Call 911 or go to your nearest emergency room

To reach a member of the gastroenterology or hepatology team during business hours:
Call 202-745-8000 x56266 or 202-745-8522

To reach a member of the gastroenterology or hepatology team after hours or during weekends:
Call VA Medical Center operator: 202-745-8000 and ask to contact the gastroenterology fellow on call.

GI clinic
Washington DC VA Medical Center 1st floor, clinic B
Clinic hours: Monday 1-4 pm
GI Clinic scheduling: 202-745-8000 x56266

Hepatitis clinic
Washington DC VA Medical Center 2nd floor, 2BE
Clinic hours: Monday & Tuesday 8:30 am-3 pm
Hepatitis scheduling: Remi Del Rosario 202-745-8000 X5975

Liver clinic:
Washington DC VA Medical Center, 2nd floor, 2BE
Clinic hours: Tuesday 1-4 pm
Liver scheduling: 202-745-8000 x56266

Gastrointestinal Endoscopy:
Washington DC VA Medical Center, third floor, GI Endoscopy suite, 3A-140A
Hours: Monday-Friday 8 am – 4:30 pm
Endoscopy scheduling: 202-745-8523

About us

The gastroenterology and hepatology section at the Veterans Affairs Medical Center in Washington DC offers expert care to patients with disorders of the digestivesystem. Our team includes board-certified specialists, gastroenterology nurses, medical technologists, physician assistants, and administrative assistants who are very skilled and very motivated to provide you with the best possible care. Our liver specialists (hepatologists) are very experienced and have the expertiseto manage very challenging liver problems. Our team also includes experts in Inflammatory Bowel Disease, nutritional support, gastrostomy care, and disorders of the pancreas and bile ducts.

We have state of the art endoscopic equipment and perform a wide variety of procedures to prevent, diagnose or treat these disorders including advanced techniquessuch as ERCP (endoscopic retrograde cholangio-pancreatography), EUS (endoscopic ultrasound), Enteroscopy (endoscopy with deep intubation of the small bowel), and Capsule Endoscopy. Appropriate management of these challenging disorders requires close collaboration from other health care providers and specialists; we have excellent support from the surgical, internal medicine, oncology, anesthesiology, radiology, and pathology departments. Outpatient clinical care is provided at our gastroenterology and hepatology clinics and endoscopy unit. Patients that require hospitalization are managed in close coordination with the internal medicine and surgery departments.

We are academically affiliated with Georgetown University and George Washington University.

What is Gastroenterology and Hepatology?

Gastroenterology is the medical specialty focuses on the digestive system, also called gastrointestinal tract, and its disorders; this branch of medicine covers problems of the esophagus, stomach, small and large intestines, pancreas, bile ducts, liver. Hepatology is the branch of medicine that studies the liver and its disorders. This subspecialty has become very important given the complexity of some of these liver disorders including liver failure, liver cancer, management of patients undergoing liver transplant, evaluation and management of viral hepatitis.

Our Team:

Specialized gastroenterology and hepatology care is provided by a team including doctors, nurses, physician assistants, medical technologists and program assistants as a team to ensure optimal and efficient care.

  • Our Doctors (Attending Physicians):
    • Louis Y. Korman, MD
    • Susan K. Lazerow, MD
    • Timothy O. Lipman, MD
    • Gustavo A. Marino, MD
    • Nazia Qazi, MD
    • Andrea E. Reid, MD
    • Preethi Sidhu, MD
    • Michael Yao, MD
  • Program Assistants (Gastroenterology and Hepatology):
    • Ann Maria E. Simmons
    • Lillie Young
  • Physician Assistants:
    • Monica Lattimore McLeod
    • Paula Mosley
    • Dianna Stukes
    • Robin Vestal
  • Enteral Nutrition Nurse:
    • Rosangela Batisda-Coelho
  • Nurse Manager:
    • Charmayne Tyler-Jackson
  • Nurses:
    • Darrick Cochran
    • Karen Hailey
    • Molly O’Connell
    • Michael Plowden
    • Neledy Tinio
  • LPN Scheduler:
    • Hassatu Bah
  • Medical Instrument Technician:
    • Duane A. Anderson
    • Reginald Johnson
    • James F. McLean
    • Armando Mercado
    • Delores Rivers
    • Clarence B. Smith



Contact Info


  • 3rd Floor, 3A166

Contact Number(s)

  • 202-745-8000 Ext. 56266
  • 202-745-8522

Hours of Operation

  • Monday to Friday 8:00 AM-4:30PM