Conditions Treated by Dr. John Leung, MD

• Abdominal Pain
• Allergic Rhinitis
• Allergies
• Anaphylactic Food Allergies
• Anaphylactic Peanut Allergy
• Anaphylaxis
• Anemia
• Angioedema
• Animal Allergies
• Asthma
• Atopic Dermatitis (Eczema)
• Barrett's Esophagus
• Benign Neoplasm of the Digestive System
• Biliary Atresia
• Bronchitis
• Celiac Disease
• Cholecystitis and Gallstones
• Chronic Sinusitis
• Cirrhosis
• Colorectal Cancer
• COPD (Chronic Obstructive Pulmonary Disease)
• Crohn's Disease (Regional Enteritis)
• Dermatitis
• Dermatitis Due to Food
• Dermatitis Due to Substances Taken Internally
• Diaphragmatic and-or Hiatal Hernia
• Diverticulitis, Intestinal
• Diverticulosis, Intestinal
• Duodenal Ulcer
• Duodenitis