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Mark H. Johnston

Mark H. Johnston

M.D., FACG, FACP, AGAF Request An Appointment Locations
Areas of Care:
  • Gastroenterology
  • Internal Medicine

A former Navy Medical Officer, Mark Johnston, MD, FACP, FACG, AGAF, has treated Members of Congress and served as Gastroenterologist to the White House. Dr. Johnston is a noted medical inventor, having patented a device to treat Barrett’s Esophagus and early esophageal cancer. Dr. Johnston is board certified in Internal Medicine and Gastroenterology and earned his medical degree at Hahnemann University. He completed his residency and GI fellowship at the National Naval Medical Center.


Locations

Mid Atlantic Endoscopy LLC Center 2 – Oregon Pike

4140 Oregon Pike,
Ephrata, PA 17522
(717) 869-4602

Mid Atlantic Endoscopy LLC Center 1 – Harrisburg Pike

2112 Harrisburg Pike, 1st Floor, Suite 100,
Lancaster, PA 17601
(717) 869-4601

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Paul D. Allegretti John D. Betteridge Kaci Christian Daniel C. Connell Jr. Christopher P. Farrell T. Raymond Foley Justin J. Harberson J. David Horwhat Mark H. Johnston Ketan G. Kulkarni Mehul J. Lalani Ben G. Lazarus Clifford T. Lomboy Melissa G. Morgan Ameet N. Parikh Alison Platt Evan Shelby Christopher E. Shih David M. Smith Dale Whitebloom Lisa Yoo
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