Mary Beth Haller is Interim Commissioner of Health for Baltimore City, a role she previously served in from October 2018 until March 2019 and from May 2023 until January 2024. Immediately prior to her being named as Interim Commissioner, she served as Deputy Commissioner for the Division of Youth Wellness and Community Health, administering public health programs that provide services to improve health outcomes for children, youth, and families. She is a licensed attorney who received her law degree from University of Baltimore and between 2002 and 2004 she worked for Baltimore City Health Department (BCHD) as a Special Assistant City Solicitor trying cases for the Mayor and City Council against property owners who failed to remove lead-based paint hazards from their properties. She has served as a family advocacy attorney, and at BCHD her prior roles include Assistant Commissioner for its Bureau of Environmental Health and Director of Baltimore’s Childhood Lead Poisoning Prevention Program. Ms. Haller has over 21 years of local government experience, having worked for BCHD for 15 of those years and six of those years at Baltimore City Public Schools in Environmental Health and Safety.