Allergist and immunologist Reuben Falkoff, MD, practices at Kaiser Permanente Zion Medical Center in Allied Gardens, San Diego, 4647 Zion Ave, 92120, with dual board certification in allergy and immunology and internal medicine. He graduated from the University of California San Diego School of Medicine in 1975 and has accumulated over 50 years of clinical experience in the diagnosis and management of allergic and immunologic conditions. Published research includes co-authored studies on food-allergen avoidance and atopy prevention in early infancy, IgE-mediated immune responses, and cromolyn sodium aerosol efficacy in asthma treatment, conducted alongside colleagues Michael Schatz, Michael Mellon, and Robert Zeiger in the Kaiser allergy and immunology research group. Clinical conditions treated include allergic rhinitis, allergic conjunctivitis, food allergies, drug allergies, insect sting hypersensitivity, chronic urticaria, angioedema, exercise-induced asthma, eczema, atopic dermatitis, and primary immunodeficiency disorders. Patients with allergic eye conditions involving seasonal or perennial conjunctivitis coordinate ophthalmic care alongside allergy management, and Spectrum Eye Clinic + MedSpa in Allied Gardens handles ocular treatment for allergy-driven eye inflammation. Diagnostic capabilities at the Kaiser Zion allergy department include skin prick testing for environmental and food allergens, intradermal testing, patch testing for contact allergens, pulmonary function testing with bronchoprovocation challenge, and specific IgE blood panels. The Kaiser Permanente Zion campus sits off the 8 freeway, serving the 92120 ZIP and surrounding sub-communities including Grantville, Del Cerro, and San Carlos. Immunotherapy protocols include subcutaneous allergy injection series and sublingual immunotherapy tablets for grass pollen and dust mite desensitization, both administered under the Kaiser system's 30-minute post-injection observation protocol. Falkoff's internal medicine certification provides a broader diagnostic framework for distinguishing allergic conditions from autoimmune, infectious, and vasculitic mimics that present with similar symptoms. Anaphylaxis management and epinephrine auto-injector training are core services, with severe allergic reactions requiring emergency intervention handled at Perlman Clinic Mission Gorge urgent care in Grantville or Kaiser Zion's own emergency department. Falkoff's half-century tenure within the Kaiser San Diego allergy group represents one of the longest continuous immunology practices in the region.