Dr. Mark Allendorph MD

  • Gastroenterology
  • Internal Medicine
36 Years Experience

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Locations & Directions

Mapbox Map of Dr. Mark Allendorph

Mark M Allendorph MD

111 E 4th St
Alton, IL 62002


Specialties & Expertise

  • Abdominal Pain
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Hemorrhoids
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Languages Spoken

  • English


  • School

    Chicago Medical School At Rosalind Franklin University Of Medicine & Science , 1980
  • Residency

    Medical College Of Wisconsin