CIHC Virtual Annual March Summit 2021 Speaker Bios Mar. 10th - "An Up-to-the-Minute Briefing" John Howard, MD, MPH, JD, LLM, Director, NIOSH Maryann M. D’Alessandro, PhD, Director, National Institute for Occupational Safety and Health (NIOSH), National Personal Protective Technology Laboratory (NPPTL) Len Welsh, former Chief, Division of Occupational Safety and Health (Cal/OSHA)