Conditions Treated by Dr. John R. Mayer, MD

• Abdominal Pain
• Anal and Rectal Cancer
• Appendicitis
• Breast Cancer
• Breast Lump
• Cholecystitis and Gallstones
• Colorectal Cancer
• Crohn's Disease (Regional Enteritis)
• Diaphragmatic and-or Hiatal Hernia
• Esophageal Cancer
• Hemorrhoids
• Inguinal Hernia
• Intestinal Abscess
• Intestinal Obstruction
• Lipomas
• Liver Cancer
• Lung Cancer
• Secondary Malignancies
• Umbilical Hernia
• Ventral Hernia