Mark Johnston, MD

GASTROENTEROLOGY

555 N Duke St

Lancaster, PA 176022250

(717) 544-5681

**NPI:** 1003898131

**Med School:** HAHNEMANN UNIVERSITY COLLEGE OF MEDICINE

**Experience:** 40 years

**Telehealth:** No

**Medicare Assignment:** Yes

Practice Locations (2)

LANCASTER GENERAL HOSPITAL

555 N Duke St
Lancaster, PA 176022250

Phone: (717) 544-5681

**Group ID:** 1254240039 | **Group Size:** 477 members

REGIONAL GASTROENTEROLOGY ASSOCIATES OF LANCASTER, LTD.

2112 Harrisburg Pike, Suite 202
Lancaster, PA 176012644

Phone: (717) 869-4600

**Group ID:** 4688575434 | **Group Size:** 250 members

LANCASTER GENERAL HOSPITAL Type: Hospital
555 NORTH DUKE STREET
Phone: (717) 544-5511
Medicare CCN: 390100 View Profile

MIPS performance data is not available or not publicly reported.

Upper gastrointestinal (GI) endoscopy for acid reflux

91 procedures (Top 75% volume)

Colonoscopy

63 procedures (Top 74% volume)

Showing top 5 results.