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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. David Langdon:

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Specialties & Research

Dr. David Langdon, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 9 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Endoscopy (Endoscopic Surgery)
  • Esophageal Stenosis
  • Esophagoscopy
  • Gastrointestinal Hemorrhage
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Langdon graduated from Washington University at St. Louis, Saint Louis.


  • Spanish

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Additional Information
Dr. David Edmund Langdon MD is a male Internist and practices in Internal Medicine and Gastroenterology.
Where does Dr. David E. Langdon practice?
Dr. David Langdon has 1 office location.
Dr. David Langdon practices Internal Medicine and Gastroenterology near Dallas, TX.
See Dallas Internists and Dallas Gastroenterologists.