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888-544-4636

Mark H. Johnston, MD, FACP, FACG, AGAF

Gastroenterology
headshot of Mark H. Johnston, MD, FACP, FACG, AGAF

Sees patients age 18 and up

Mark H. Johnston, MD, FACP, FACG, AGAF

Gastroenterology

Sees patients age 18 and up

  • Dr. Johnston is an independent physician who is not employed by Penn Medicine Lancaster General Health.
Call 717-869-4600 Scheduling Assistance
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