Capital Digestive Physician Katherine Hahn,MD, MPH

Katherine Hahn,MD, MPH


Dr. Katherine J. Hahn is from Long Island, New York but is proud to now call Maryland her home. She earned her Bachelor of Arts in Sociology from Northwestern University and continued her education at The Feinberg School of Medicine, Northwestern University in Chicago, IL. Prior to residency, Dr. Hahn received a Master of Public Health from Johns Hopkins University, where she focused on Patient Safety and Health Care Quality Improvement. Dr. Hahn completed her Internal Medicine Residency at Georgetown University Hospital in Washington, DC and served as Chief Medical Resident. During her residency, she received the prestigious Johnson & Johnson Global Health Scholar award and was selected by the American Association for Liver Diseases as an Emerging Liver Scholar. She followed up at Georgetown University Hospital by completing a fellowship in Gastroenterology and Hepatology.

Dr. Hahn has a strong academic background, with many peer-reviewed publications, presentations, and abstracts on the topics of liver disease, inflammatory bowel disease, colonoscopy, and patient safety. As a first-generation Korean-American, Dr. Hahn is passionate about serving her community, as well as others, and speaks fluent Korean.

During her free time, Dr. Hahn enjoys exploring Maryland with her husband and two young children. Their favorite museum is the Museum of Natural History because of the Butterfly Pavilion. Dr. Hahn also maintains several artistic interests and for many years she was a trained cellist who performed at Carnegie Hall with the New York Philharmonic Orchestra and the New York Pops.


  • English
  • Korean

Office Locations

Endoscopy Centers

Special Areas of Interest

  • Inflammatory bowel disease
  • Gastroesophageal Reflux Disease (GERD)
  • Advanced liver disease
  • Women’s digestive health
  • Barrett’s Esophagus
  • Microscopic Colitis


Medical Education

Feinberg School of Medicine/ Northwestern University / Chicago, IL


Internal Medicine / Georgetown University Hospital / Washington, DC


Gastroenterology & Hepatology / Georgetown University Hospital / Washington, DC

Graduate Education

Master of Public Health / Johns Hopkins University / Baltimore, MD

Undergraduate Education

Sociology / Northwestern University / Chicago, IL


  • Internal Medicine

    American Board of Internal Medicine
  • Gastroenterology

    American Board of Internal Medicine


Hospital Affiliations

  • MedStar Montgomery Medical Center

Member of

  • American Society for Gastrointestinal Endoscopy
  • American Gastroenterological Association – Member
  • American College of Physicians – Member

Holiday Closure

Capital Digestive Care will be closed Monday, July 4th, in observance of Independence Day.