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Phone: 800-275-6401
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To schedule an appointment

Physicians call:1.800.332.8901
Patients call:1.800.275.6401

This physician sees patients at the following locations:

Gastroenterology Danville
100 N Academy Ave
Danville, PA 17822

David L. Diehl, MD, FACP, FASGE
Director, Interventional Endoscopy
Clinical Professor of Medicine, Temple School of Medicine

Practicing Specialties:

  • Gastroenterology, Board Certified, 1989


  • U. of California - Los Angeles, School of Medicine 1983


  • Harbor - UCLA Medical Center 1987


  • U. of California - San Francisco Medical Center 1988
  • U. of California - Los Angeles Medical Center 1990

Clinical Interests:

- ERCP and diseases of biliary tract
- Pancreatic diseases
- Endoscopic ultrasound (EUS) and fine needle aspiration (FNA)
- Barrett's esophagus and endoscopic ablation including endoscopic mucosal resection (EMR) Barr-X, cryoablation
- Enteral stents
- Complex polypectomy
- Management of complex and difficult strictures

Professional Memberships:

  • American Academy of Medical Acupuncture
  • American College of Physicians
  • American Gastroenterology Association
  • American Society of Gastrointestinal Endoscopy

Hospital Affiliations:

  • Geisinger Community Medical Center
  • Geisinger Gray's Woods Outpatient Surgery
  • Geisinger Lewistown Hospital
  • Geisinger Medical Center
  • Geisinger Wyoming Valley Medical Center
  • Same Day Surgery at SWB
  • Mount Nittany Medical Center