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Dr. John Horwhat, MD

Dr. John Horwhat, MD

Age 53 Gastroenterology M

Telehealth available


Dr. John Horwhat, MD is a gastroenterology specialist in Lancaster, PA. Dr. Horwhat completed a residency at Madigan Army Medical Center. He currently practices at Lancaster Gastroenterology Inc and is affiliated with Lancaster General Hospital. He accepts multiple insurance plans. Dr. Horwhat is board certified in Gastroenterology.


  1. Lancaster Gastroenterology Inc

    1. 1
      Lancaster Gastroenterology Inc
      2112 Harrisburg Pike Ste 202, Lancaster, PA 17601 (717) 544-3500
  1. Walter Reed Army Medical Center

    1. 2
      Walter Reed Army Medical Center
      6900 Georgia Ave, Washington, DC 20037 (202) 782-6765


  • Duke University Hospital, Fellowship Hospital — 2004
  • Walter Reed Army Medical Center, Fellowship Hospital — 2000
  • Madigan Army Medical Center, Residency Hospital — 1995
  • Madigan Army Medical Center, Internship Hospital — 1993
  • Temple University School of Medicine, Medical School — 1992

Insurance Accepted

  • Aetna
  • Amerihealth
  • Blue Cross Blue Shield
  • Capital Blue Cross
  • Cigna
  • Coventry Health Care
  • Geisinger Health Plan
  • Highmark Blue Cross Blue Shield
  • Humana
  • MultiPlan

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Outstanding doctor. Simply put, one of the finest physicians I have encountered. Intellectual, compassionate. Spent time answering questions and helping us get through a difficult medical problem. I highly recommend him.
— Mar 06, 2018
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Dr. John Horwhat, MD
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Hospital Affiliations

  • Lancaster General Hospital