Contact Information
Center for Health Impact Evaluation
Chief Science Office
Los Angeles County Department of Public Health

313 N. Figueroa St., Rm 608
Los Angeles, CA 90012
Phone: (213) 288-8673
Fax: (213) 250-2594
Email: CHIE@ph.lacounty.gov
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Who We Are
Will Nicholas, Ph.D., MPH
Director, Center for Health Impact Evaluation

Dr. Nicholas joined the LA County Department of Public Health (DPH) in October 2015. Before joining DPH, he spent five years as a researcher and lecturer at the UCLA Fielding School of Public Health. Prior to that he spent three years as Director of Research at the California Endowment, six years as Senior Research Analyst at First 5 LA, and two years as Associate Policy Analyst at RAND. Dr. Nicholas received a B.A. in Spanish Literature from the University of California, Berkeley; an M.A. in Latin American Studies and an MPH in Population and Family Health from UCLA; and a Ph.D. in Health Policy from Yale University.



Laura Stroud, MSW
Project Manager

Laura is the Project Manager for the Center for Health Impact Evaluation (CHIE). She received her BA in Sociology from the University of California, Santa Barbara and her Master’s degree in Social Work from the University of Michigan with a concentration in Administration and Community Organization. Laura has over 20 years of experience in project, contract and grant management. Before joining DPH, Laura worked for several nonprofits in the field of prevention education.



Semhal Berhe, MPH
Epidemiology Analyst

Semhal earned her Bachelor's and Master's Degrees in Public Health from Cal State Northridge. Before joining CHIE, Semhal was an analyst in the Outbreak Management Branch of the DPH COVID-19 Incident Command System. Prior to that she was a Data Evaluator at Tarzana Treatment Centers and a student professional worker at the LA County Department of Mental Health.



Laureen Masai, MPH
Research Analyst III, Behavioral Sciences

Laureen earned her Bachelor's degrees in Chemistry and Global Studies at the University of Kansas, and a Master's degree in public health from UCLA. She joined LACDPH in 2019, working as an analyst across various programs, including Women's Health and Acute Communicable Disease Control. Previously, she worked at the UCLA Center for Health Policy Research, managing data access for the California Health Interview Survey.



 
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