Toggle navigation
OpenDoctor.io
Signup
Login
Conditions Treated by Dr. Joel T. Callahan Sr., MD
Abdominal Pain
Anal and Rectal Cancer
Anemia
Anorectal Abscess
Barrett's Esophagus
Benign Neoplasm of the Digestive System
Biliary Atresia
Carcinoma in Situ
Cholecystitis and Gallstones
Cirrhosis
Colorectal Cancer
Crohn's Disease (Regional Enteritis)
Diaphragmatic and-or Hiatal Hernia
Diverticulitis, Intestinal
Diverticulosis, Intestinal
Diverticulum of Esophagus
Duodenal Ulcer
Duodenitis
Dysentery
Dysphagia
E. coli Food Poisoning
Enteritis
Esophageal Achalasia and Cardiospasm
Esophageal Cancer
Esophageal Ulcer
Esophageal Varices
Esophagitis
Gas-Bloat Syndrome
Gastric Ulcer
Gastritis
Doctor Directory
 | 
TOS
 | 
twitter
 | 
FB
 | 
Angel
 | 
blog