Physicians do not receive formal environmental health training in medical schools. The objectives of this study were to provide health care providers with basic environmental medicine training to better advise, treat or refer patients in the community and to observe any differences in the environmental medicine learning gains pre/posttest assessment. To rectify the problem of the lack of physicians' training related to environmental hazards, we conducted an environmental health workshop which targeted physicians living near Health Zone 1, Superfund ash sites. Fifty health care providers from both St.