Board-certified medical toxicologist and occupational medicine specialist Frederick Y. Fung, MD brings 45 years of clinical and research experience to Sharp Rees-Stealy's downtown San Diego office at 2001 Fourth Avenue in Bankers Hill. Dr. Fung graduated from Taipei Medical College in 1979 and completed residencies in family medicine at Henry Ford Genesys Hospital and in occupational and environmental medicine at UC Irvine, building a sub-specialty in mycotoxin exposure, indoor air quality illness, and chemical neurotoxicity that supports geriatric care coordination with providers like Windward Life Care for homebound patients in environmentally compromised housing. His peer-reviewed publications in the American Journal of Medicine and Biomedical Journal span topics from mold-related illness to NMR biosensor diagnostics, establishing a clinical-research bridge few community-based primary care physicians maintain. Preventive medicine screenings at this location include environmental and occupational exposure assessments that complement the hormone-panel evaluations available at Hormones and Health Wellness for patients investigating endocrine disruption linked to workplace chemical contact. His highest-complexity evaluations involve multi-organ toxicological workups for patients with chronic low-dose chemical exposures, integrating hepatic function panels, neuropsychological screening, and pulmonary function testing to establish causation under California workers' compensation and OSHA reporting frameworks.