With more than 40 years of clinical, academic, and research experience, this board-certified M.D. specializes in rheumatology, allergy-immunology, and internal medicine, and brings more than 35 years of expert witness involvement including consultation, deposition, and courtroom testimony. His work focuses on autoimmune disease, immune-mediated hepatobiliary disorders, respiratory and environmental allergies, and the pathogenesis of immune dysfunction, and he evaluates matters involving mold and allergen exposure, food intolerance and safety, nutrition and immunity, drug-related adverse effects, and environmentally triggered immune responses. He holds a Doctor of Medicine degree and maintains board certification in Internal Medicine, Rheumatology, and Allergy and Immunology.

His professional background includes senior academic leadership and extensive peer-reviewed scholarship in immunopathology, autoimmune disease, and environmental influences on immunity, as well as service as an advisor to the U.S. Food and Drug Administration on matters relating to nutrition and immunity. In litigation and regulatory matters, he applies established principles of clinical immunology and rheumatology to issues of causation, standard of care, environmental exposure, and immune system injury, providing analysis of complex medical records, exposure histories, pharmacologic data, and immunologic findings.