Dr. Nitzkin is a public health physician with training and experience in public health, preventive medicine and public administration. He has been a medical epidemiologist, local health director, state health director and president of two national public health organizations. For the past twenty years he has been in the private practice of public health as a policy consultant and expert witness dealing primarily with poorly performing health facilities and correctional (jail/prison) health programs. During the past nine years, he has been very active at the national level in issues related to tobacco harm reduction and electronic cigarettes. For more on Dr. Nitzkin's involvement with tobacco harm reduction see the Tobacco Harm Reduction page on this website.