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Office of Health Assessment & Epidemiology
Epidemiology Unit



Contact Information
Epidemiology Unit
Office of Health Assessment and Epidemiology
Department of Public Health
County of Los Angeles

313 N. Figueroa Street, Suite 127
Los Angeles, CA 90012   MAP

Phone: (213) 240-7785
Fax: (213) 250-2594
Staff Directory
Aida Angelescu, MS

Alex Ho, MD, MPH

Douglas Morales, MPH

Jennifer Piron, MPH

Lisa Smith, DrPH, MS

Loren Lieb, MPH

Louise Rollin-Allamillo, MS

Natalia Sejbuk, MPH

Sun Lee, MPH

Heena Hameed, MPH

Geographic Information Systems (GIS) are used in public health to map and understand the distribution of health and disease in communities. The Epidemiology Unit coordinates GIS training and resources in the Department, including software licensing, access to geographic data sources, and training sessions.

The Epidemiology Unit generates various maps that are important for the practice of public health. Many of these maps can be found through the links below. However, if you have more specialized data needs, please contact us. A GIS service request form is available through the link below:

GIS Service Request Form

GIS and Los Angeles County

The following are GIS resources provided by Los Angeles County

GIS and Public Health

WHO Public Health Mapping and GIS - GIS tools, data, and resources for public health mapping from the World Health Organization (WHO).

CDC: Epi Info™ - Resources for Creating Public Health Maps - GIS maps, news, and events

ESRI - GIS for Health and Human Services - ways for public health officials to use GIS


Here are some frequently requested maps:

GIS Data Sources

The following are free GIS data sources that contain a variety of layers and shapes with the use of appropriate GIS software.

Health-Specific Resources for California:

Information useful towards understanding GIS may be found in a variety of Internet sites.

GIS Software

There are a variety of GIS software products and respective companies.


Self-learning resources for ArcGIS users: Getting to Know ArcGIS Desktop (Second Edition): Basics of ArcView, ArcEditor,and ArcInfo.   Updated for ArcGIS 9, ESRI Press, ISBN: 1-58948-083-X

ESRI Virtual Campus – GIS Education and Training on the Web

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