Dr. Ronald Simon in Encinitas serves as Emeritus Head of the Division of Allergy, Asthma & Immunology at Scripps Clinic, holding dual board certifications in allergy-immunology and internal medicine with over 160 peer-reviewed publications. His subspecialty focus on aspirin-exacerbated respiratory disease, drug-reaction desensitization, and food allergy diagnostics generates referral overlap with dermatology practices such as Dermatologist Medical Group of North County for immune-mediated cutaneous reactions. He earned his MD from Chicago Medical School at Rosalind Franklin University in 1974, completed internal medicine residency at Northwestern University, and finished his allergy and immunology fellowship at Scripps Clinic Research Foundation in 1978. His Santa Fe Drive office on the Scripps Memorial Hospital Encinitas campus serves patients whose complex allergic and immunologic conditions often require coordinated primary care through nearby practices such as Perlman Clinic Encinitas. Named to the US News & World Report Best Doctors in America list annually since 2000, his clinical contributions include co-chairing the FDA committee on adverse reactions to food constituents and directing the Scripps Aspirin Exacerbated Respiratory Disease Clinic.