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ATSDR Regional Offices

Western Branch - Region 9

ATSDR Region 9
75 Hawthorne St.
Suite 100, M/S:HHS-1
San Francisco, CA 94105
Map of Region 9

Region 9 includes Arizona, California, Hawaii, Nevada, Commonwealth of the Northern Mariana Islands (CNMI), U.S. Territory of Guam, Marshall Islands, Palau, American Samoa.

The Agency for Toxic Substances and Disease Registry (ATSDR) works with states and other federal agencies to prevent exposure to hazardous substances from waste sites.  The agency conducts public health assessments, health studies, surveillance activities, and health education training in communities around waste sites on the U.S. Environmental Protection Agency's National Priorities List.

CAPT Robert Knowles
Regional Director
(415) 947-4317
(415) 947-4323 - FAX
KNOWLES.ROBERT@epa.gov
rdk6@cdc.gov
Benjamin Gerhardstein
Regional Representative
(415) 947-4316
GERHARDSTEIN.BEN@epa.gov
fty9@cdc.gov
Libby Vianu
Environmental Health Scientist
Regional Representative
(415) 947-4319
VIANU.LIBBY@epa.gov
ljl8@cdc.gov
Jamie Rayman
Public Health Analyst
Health Educator
(415) 947-4318
RAYMAN.JAMIE@epa.gov
fpe7@cdc.gov
Contact Us:
  • Agency for Toxic Substances and Disease Registry
    4770 Buford Hwy NE
    Atlanta, GA 30341
  • 800-CDC-INFO
    (800-232-4636)
    TTY: (888) 232-6348
    Contact CDC-INFO
  • New Hours of Operation
    8am-8pm ET/Monday-Friday
    Closed Holidays
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Agency for Toxic Substances and Disease Registry, 4770 Buford Hwy NE, Atlanta, GA 30341
Contact CDC: 800-232-4636 / TTY: 888-232-6348

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