We offer diagnostic and treatment options for common and complex conditions regarding allergy, asthma and immunology. This includes conditions spanning from drug allergies, allergic rhinitis and conjunctivitis to chronic spontaneous urticaria, and mast cell disorder etc. Through in-depth consultation, we can identify potential environmental allergens triggering symptoms and tailor specific treatment plans to each individual’s immunologic response. Dr. Leung is trained in both Gastroenterology and Allergy through formal specialized fellowship training. He is board certified for Gastroenterology and Allergy/Immunology. Given the diagnosis of these complex disorders, we believe clinical history is the most important component of the evaluation.
We assist new patients to obtain outside medical records, and Dr. Leung carefully reviews these documents prior to you or your child's visit. Upon reviewing your clinical history, physical exam, and previous laboratory, histological, and endoscopic data, we confirm a diagnosis and provide you with a customized treatment plan. We treat a broad range of conditions, not exclusive to those listed.
Conditions we treat
Allergic Contact Dermatitis
Alpha-Gal
Anaphylaxis
Angioedema/Swelling
Aspirin-Exacerbated Respiratory Disease (AERD)
Asthma
Autoimmune Diseases
Chronic Sinusitis and/or Nasal Polyposis
Drug Allergy and Desensitization
Eczema/Atopic Dermatitis
Eosinophilic Esophagitis
Eosinophilic Gastrointestinal Disorders
Food Allergy and Oral Immunotherapy
Food Protein-Induced Enterocolitis Syndromes (FPIES)
Food Intolerance (Lactose, Fructose, Fructan, Sorbitol and others)
Food Dependent Exercise Induced Anaphylaxis
Food-Induced Inflammatory Disorders
Hand Dermatitis/Eczema
Hereditary Angioedema (HAE)
Hives (Urticaria)
Hypereosinophilic Syndrome (HES)
Immunodeficiency
Latex Allergy
Mast Cell Activation Disorder
Nonallergic rhinitis
Pruritus
Seasonal, Perennial, and Environmental Allergy
Stinging Insect Allergy
Oral Allergy Syndrome
Other conditions and names
Allergic Conjunctivitis/Eye allergy
Allergic Reaction
Allergic Rhinitis
Celiac Disease
Chronic Cough
Exercise-Induced Bronchoconstriction (EIB)
Eye Allergy
Hay Fever
Histamine Toxicity
Hypersensitivity Reactions
Intravenous Immunoglobulin (IVIG) Infusion
Insect allergy
Neutropenia
Mast Cell GI disorder
Pet Allergy
Pollen Fruit Syndrome (PFS)
Rhinitis
Rhinosinusitis
Selective IgA Deficiency
Sinus Headache
Skeeter Syndrome
Skin allergy
Vocal Cord Dysfunction (VCD) or Paradoxical Vocal Fold Movement (PVFM)
Wheat Hypersensitivity/Non-Celiac Gluten Hypersensitivity
Looking to transfer your allergy shots to our clinic? Click here for more info!
Diagnostic/Instructions
We offer some of the most comprehensive state-of-the-art diagnostic studies in allergy, asthma and immunology at our center. This includes aeroallergen immunotherapy, skin prick testing, patch testing, and component-resolved diagnostics etc. We have in-house laboratory service provided by Quest Diagnostics and we have a nutritionist on-site to address any nutritional concerns.