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Mark H Johnston, MD is a Gastroenterology Physician physician currently practicing at Midatlantic Gastrointestinal Center III in Lancaster, Pennsylvania. They hold admitting privileges at 2 hospital(s), including Midatlantic Gastrointestinal Center III. To see all the affiliations of Mark H Johnston, MD, start a free trial.

Mark H Johnston, MD is a board-certified Gastroenterology Physician physician with a subspecialty in Gastroenterology. They practice at Midatlantic Gastrointestinal Center III in Lancaster, Pennsylvania.

Mark H Johnston, MD performs procedures across 6510 clinical categories. Their most commonly billed procedures based on Medicare claims data include , , and . Full procedure and CPT code data is available to Dmand AI subscribers, start a free trial.

Mark H Johnston, MD's National Provider Identifier (NPI) is 1003898131. This is a public identifier issued by CMS and can be verified at the NPPES NPI Registry. Their primary taxonomy code is 207RG0100X, corresponding to Gastroenterology Physician.

The EHR and practice technology used by Mark H Johnston, MD at Midatlantic Gastrointestinal Center III is available to Dmand AI subscribers. Sign up for a free trial to unlock the full technology stack.

Mark H Johnston, MD accepts 0 insurance plans. A full list of accepted payers is available in the profile above.

Mark H Johnston, MD holds hospital privileges at 2 institution(s). Their primary affiliation is Midatlantic Gastrointestinal Center III in Lancaster, Pennsylvania.

Mark H Johnston, MD's board certification details are available to Dmand AI subscribers.

Mark H Johnston, MD's education history is available to Dmand AI subscribers.

Based on CMS Medicare Part B claims data, Mark H Johnston, MD served approximately 595 Medicare beneficiaries in 2023. Total patient volume including non-Medicare patients is available to Dmand AI subscribers.

Mark H Johnston, MD is affiliated with LANCASTER GENERAL HOSPITAL, a large (20+ physician) practice with 237 physicians based in Lancaster, Pennsylvania. The practice is independently owned.

Mark H Johnston, MD has 0 indexed publications on record and no active clinical trial listings were found at time of last verification. Their research activity is available to Dmand AI subscribers. Sign up for a free trial to unlock their full research activity.