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Office
2112 Harrisburg Pike
Suite 203
Lancaster, PA 17601Phone+1 717-869-4600
Summary
- Dr. Mark Johnston is a gastroenterologist in Lancaster, PA and is affiliated with multiple hospitals in the area, including Penn Medicine Lancaster General Hospital and Lancaster Regional Medical Centers. He received his medical degree from Drexel University College of Medicine and has been in practice 32 years. He specializes in advanced endoscopic interventional and is experienced in gastroesophageal reflux, interventional gastroenterology, esophageal cancer, and barrett's esophagus.
Education & Training
- National Capital ConsortiumFellowship, Gastroenterology, 1993 - 1995
- National Capital ConsortiumFellowship, 1992 - 1993
- Naval Medical Center (Portsmouth)Residency, Internal Medicine, 1985 - 1990
- Drexel University College of MedicineClass of 1985
- Penn State UniversityB.S., 1976 - 1980
Certifications & Licensure
- PA State Medical License 2004 - 2024
- VA State Medical License 1987 - 2024
- American Board of Internal Medicine Gastroenterology
Awards, Honors, & Recognition
- Doctor Honoris Causa Medical University Tirana, Albania, 2016
- CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2012
- Fellow (AGAF) American Gastroenterological Association, 2008
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Publications & Presentations
PubMed
- 21 citationsSafety and efficacy of endoscopic spray cryotherapy for esophageal cancer.Franklin Tsai, Shireen Ghorbani, Bruce D. Greenwald, Sunguk Jang, John A. Dumot
Diseases of the Esophagus. 2017-11-01 - 100 citationsEndoscopic Spray Cryotherapy for Esophageal Cancer: Safety and EfficacyBruce D. Greenwald, John A. Dumot, Julian A. Abrams, Charles J. Lightdale, Donald S. David
Gastrointestinal Endoscopy. 2009-04-01 - 129 citationsCryoablation of Barrett's esophagus: a pilot study.Mark H. Johnston, John A. Eastone, John D. Horwhat, Jennifer B. Cartledge, Janice S. Mathews
Gastrointestinal Endoscopy. 2005-12-01
Journal Articles
- Safety and efficacy of endoscopic spray cryotherapy for Barrett’s esophagus with high-grade dysplasiaShaheen NJ, Greenwald BD, Peery AF, Dumot JA, Gastrointest Endosc, 1/1/2010
- Cryospray ablation (CSA) in the palliative treatment of squamous cell carcinoma of the esophagusCash BD, Johnston LR, World Journal of Surgical Oncology, 1/1/2007
- Dysplasia and Cancer in a Large Multicenter Cohort of Patients with Barrett’s EsophagusSharma P, Falk GW, Weston AP, Reker D, Sampliner RF, Clinical Gastroenterology and Hepatology, 1/1/2006
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Books/Book Chapters
Abstracts/Posters
- Low Pressure Cryospray Ablation of High Grade Dysplasia in Barrett's Esophagus: 2 Year Follow-upJohnston, MH, Gastrointest Endosc, 1/1/2013
- Safety and Efficacy of Endoscopic Spray Cryotherapy for Barrett's Esophagus with High-Grade DysplasiaShaheen NJ, Greenwald BD, Dumot JA, Wolfsen HC, Abrams JA, Burdick SJ, Barthel JS, Wang KK, Nishioka NS, Mallat DB, Zfass AM, Smith JO, Lightdale CJ, Gastrointest Endosc, 1/1/2009
- Endoscopic Spray Cryotherapy for Esophageal Cancer: Safety and EfficacyGreenwald BD, Dumot JA, Lightdale CJ, Abrams JA, Mallat DB, , David DS, Nishioka NS, Burdick SJ, Shaheen NJ, WolfsenHC, Gastrointest Endosc, Digestive Diseases Week, Chicago, 1/1/2009
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Lectures
- CryotherarpyPhiladelphia, PA - 1/22/2006
- GERD, Barrett’s Esophagus, Esophageal Cancer and CryoablationTirana, Albania - 1/1/2003
- Update in Gastroenterology: GERD, IBD and Virtual ColonoscopyTirana, Albania - 1/1/2002
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Other
- Barrett’s Esophagus and Barrett’s ulcerwith Eastone JA, eMedicine online textbook
1/1/2000 - Yersinia enterocoliticawith Cash BD, eMedicine online textbook
1/1/2000 - Editorial Comment – Endoscopic Spray Cryotherapy: A New Ice Age in Gastroenterology?Johnston MH
http://gastroenterology.medscape.com/Medscape/gastro/journal/2000/v02.n04/mgi7321.john/mgi7321.john.html
1/1/2000
Professional Memberships
- Fellow
- Fellow
- Fellow
External Links
- 17 Cairnshttp://www.17cairns.com
- USD Healthhttps://usdigestivehealth.com/for-patients/providers/mark-johnston/
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