Accepting new patients

Dr. Mark Allendorph, MD

Gastroenterology ·  Male · Age 64

Dr. Allendorph

Dr. Mark Allendorph, MD is a gastroenterology specialist in Alton, IL and has been practicing for 34 years. He graduated from Rosalind Franklin University Of Medicine Science/The Chicago Medical School in 1980 and specializes in gastroenterology.


Accepting new patients


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Dr. Allendorph accepts

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(618) 465-5849

Dr. Allendorph accepts the following insurance:

Cigna
Cigna HMO
Cigna PPO
LocalPlus
Open Access Plus

Background Check

No malpractice claims found for Illinois
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
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Experience Check

Check Dr. Allendorph's experience treating your condition or procedure

Dr. Allendorph's Top Procedures and Conditions

Treatment Frequency
Abdominal Pain
high
high

Treatment Frequency

Dr. Allendorph treats Abdominal Pain more than 84% of his peers

Dr. Allendorph treats this condition more than 84% of his peers

Noninfectious Gastroenteritis and Colitis
normal
normal

Treatment Frequency

Dr. Allendorph treats Noninfectious Gastroenteritis and Colitis more than 74% of his peers

Dr. Allendorph treats this condition more than 74% of his peers

Hemorrhoids
normal
normal

Treatment Frequency

Dr. Allendorph treats Hemorrhoids more than 73% of his peers

Dr. Allendorph treats this condition more than 73% of his peers

Dr. Allendorph's conditions and procedures:

  • Abdominal Disorders
  • Abdominal Pain
  • Anal or Rectal Pain
  • Anal Prolapse
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Blood Disorders
  • Cancer
  • Celiac Disease
  • Cholecystitis and Gallstones
  • Cirrhosis
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Enteritis
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroenterology Procedures
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Heartburn
  • Hemochromatosis
  • Hemorrhoids
  • Hepatitis C
  • Hernia
  • Ileus
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Ischemia
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Liver Damage from Alcohol
  • Malnutrition
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Reflux Esophagitis
  • Stomach Diseases
  • Stomal Ulcer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Enteritis
  • Viral Hepatitis
  • Vomiting Disorders

About Me

Biography

Dr. Mark Allendorph, MD is a gastroenterology specialist in Alton, IL and has been practicing for 34 years. He graduated from Rosalind Franklin University Of Medicine Science/The Chicago Medical School in 1980 and specializes in gastroenterology.

Specialties

  • Gastroenterology

Board Certifications

  • Gastroenterology
  • Internal Medicine

Education

Med College Wi Affil Hosps
Residency Hospital
1985
Med College Wisc Affil Hosps
Fellowship Hospital
1983
Med College Wisc Affil Hosps
Internship Hospital
1980
Rosalind Franklin University Of Medicine Science/The Chicago Medical School
Medical School
1985
1983
1980

Awards

Dr. Allendorph's Reviews

Likelihood to recommend Dr. Allendorph

5.0

Based on 7 reviews

5 Stars
100%
(7)
4 Stars
0%
(0)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
0%
(0)

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Average Wait Time
  • Under 10 minutes
Dr. Allendorph's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness

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