Dr. Mark Miller currently serves as the director of the University of California, San Francisco- Pediatric Environmental Health Specialty Unit (PEHSU) and as a public health medical officer for the California EPA Office of Environmental Health Hazard Assessment - Air Pollution Toxicology and Epidemiology Section (CA EPA). At the California EPA, Dr. Miller is working on developing risk assessment methodology that addresses the unique vulnerabilities of children. Recently he has edited a review of the health effects of environmental tobacco smoke for the California Toxic Air Contaminant listing process. Dr. Miller has served as a member of advisory committees and expert panels in the area of pediatric environmental health for the state of California and federal agencies. His articles on pediatric environmental health issues have appeared in such publications as Pediatrics, Environmental Health Perspectives, and Preventive Medicine.