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Office
2112 Harrisburg Pike
Ste 202
Lancaster, PA 17601Phone+1 717-544-3500Fax+1 717-544-3501
Summary
- John Horwhat, MD, is a gastroenterologist based in Lancaster, PA, with subspecialties in Advanced Endoscopic Interventional, Esophagus Disease, Gastrointestinal Cancer, and Pancreas Disease. His career is marked by a wide-ranging education and professional history that includes roles as the Assistant Chief and Fellowship Program Director at Walter Reed National Military Medical Center, and Fellowships in Gastroenterology at the National Capital Consortium and Advanced Endoscopy at Duke University Hospital. Dr. Horwhat has a wealth of experience in areas such as general gastroenterology, gastroesophageal reflux, irritable bowel syndrome, interventional gastroenterology, and biliary tract disease. He has contributed to clinical research and has multiple highly cited publications to his name. He has also participated in clinical trials and received the CMS Meaningful Use Stage 1 Certification from EpicCare Ambulatory EMR in 2013.
Education & Training
- Duke University HospitalFellowship, Advanced Endoscopy, 2003 - 2004
- National Capital ConsortiumFellowship, Gastroenterology, 1997 - 2000
- Madigan Army Medical CenterResidency, Internal Medicine, 1992 - 1995
- Lewis Katz School of Medicine at Temple UniversityClass of 1992
Certifications & Licensure
- PA State Medical License 1994 - 2024
- MD State Medical License 2012 - 2014
- NE State Medical License 2008 - 2014
- ND State Medical License 2010 - 2011
- NC State Medical License 2001 - 2008
- American Board of Internal Medicine Gastroenterology
Awards, Honors, & Recognition
- CMS Meaningful Use Stage 1 Certification EpicCare Ambulatory EMR, Epic Systems Corporation, 2013
Clinical Trials
- Endoesophageal Cryotherapy For Ablating Barrett's Esophagus and Early Stage Esophageal Cancer Start of enrollment: 2007 Mar 01
Publications & Presentations
PubMed
- 4 citationsThe Dose of Omeprazole Required to Achieve Adequate Intraesophageal Acid Suppression in Patients with Gastroesophageal Junction Specialized Intestinal Metaplasia and B...Joshua T. Watson, Fouad J. Moawad, G. R. Veerappan, John Bassett, Corinne L. Maydonovitch
Digestive Diseases and Sciences. 2013-07-04 - 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 - 140 citationsA randomized comparison of EUS-guided FNA versus CT or US-guided FNA for the evaluation of pancreatic mass lesionsJohn D. Horwhat, Erik K. Paulson, Kevin McGrath, M. Stanley Branch, John Baillie
Gastrointestinal Endoscopy. 2006-06-01
Professional Memberships
- Member
- Fellow
- Fellow
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