LEPAC Membership


Matthew Ammon, M.S.
Office of Lead Hazard Control and Healthy Homes
U.S. Department of Housing and Urban Development
Washington, DC
Term: 7/1/19-6/30/22


Perri Ruckart, M.P.H.
Health Scientist, Team Lead
Program Development, Communications, and Evaluation Team
Lead Poisoning Prevention and Environmental Health Tracking Branch
Division of Environmental Health Science and Practice
National Center for Environmental Health
Centers for Disease Control and Prevention


Tammy Barnhill-Proctor, M.S.
Acting Director
Office of Early Learning
U.S. Department of Education
Washington, DC
Term: 7/1/19-6/30/22

Jeanne Briskin, M.S.
Office of Children’s Health Protection
U.S. Environmental Protection Agency
1200 Pennsylvania Avenue NW
Washington, D.C. 20460
Term: 12/2/19-6/30/22

Wallace Chambers Jr., M.P.H.
Deputy Director
Environmental Public Health
Cuyahoga County Board of Health
Parma, OH
Term: 7/1/19-6/30/21

Tiffany DeFoe, M.S.
Office of Chemical Hazards-Metals
Occupational Safety & Health Administration
U.S. Department of Labor
Washington DC
Term: 7/1/19-6/30/22

Michael Focazio, Ph.D., M.S.
Program Coordinator
U.S. Geological Survey
Reston, VA
Term: 7/1/19-6/30/22

Monique Fountain Hanna, M.D., M.P.H., M.B.A.
Senior Regional Medical Consultant
Health Resources and Services Administration
Philadelphia, PA
Term: 7/1/19-6/30/22

Nathan Graber, M.D., M.P.H.
Clifton Park, NY
Term: 7/1/19-6/30/21

Karla Johnson, M.P.H.
Marion County Public Health Department
Indianapolis, IN
Term: 7/1/19-6/30/21

Donna Johnson-Bailey, MPH, RD
Senior Nutrition Advisor
USDA Food and Nutrition Service
Office of Policy Support
Braddock Metro Center II
1320 Braddock Place
Alexandria, VA 22314
Term: 1/28/20-6/30/22

Erika Marquez, PhD, M.P.H.
Research Associate
University of Nevada at Las Vegas
Las Vegas, NV
Term: 7/3/19-6/30/21

Howard Mielke, Ph.D., M.S.
Department of Pharmacology
Tulane University School of Medicine
New Orleans, LA
Term: 7/1/19-6/30/21

Anshu Mohllajee, Sc.D., M.P.H.
Research Scientist III
California Department of Public Health
Richmond, CA
Term: 7/2/19-6/30/21

Jill Ryer-Powder, Ph.D., M.N.S.P.
Principal Health Scientist
Environmental Health Decisions
Ladara Ranch, CA
Term: 7/1/19-6/30/21


LEPAC consists of 15 Federal and non-Federal experts in the fields of epidemiology, toxicology, mental health, pediatrics, early childhood education, special education, diet and nutrition, and environmental health. Half of the committee (8 people) consists of Federal representatives. The Centers for Disease Control and Prevention (CDC) solicited federal members from HHS, the Consumer Product Safety Commission (CPSC), Department of Agriculture, Department of Education, Department of Housing and Urban Development, Environmental Protection Agency (EPA), Occupational Safety and Health Administration (OSHA), and U.S. Geological Survey.

Federal Register Noticeexternal iconexternal icon to solicit nominations for non-Federal members was published on February 21, 2018.