The Western States Pediatric Environmental Health Specialty Unit (WS PEHSU) is one of 10 regional federally funded clinical and educational centers. We provide expert clinical and public health evaluations of pregnant women, children and communities with suspected environmental health problems or concerns. In addition, PEHSUs are a source of medical information and advice on environmental conditions that influence the health of pregnant women and children.

PEHSUs are academically based, typically at university medical centers, and are located across the United States, Canada, and Mexico. These PEHSUs form a network that is capable of responding to requests for information throughout North America and offer advice on prevention, diagnosis, management, and treatment of environmentally-related reproductive and pediatric health effects.

We are located at the University of California, San Francisco, but we have regional consultants in other geographic areas served by our PEHSU. Our program serves Arizona, California, Hawaii, Nevada, the Pacific Islands, and Tribal Nations.

The PEHSUs are administered by the American Academy of Pediatrics in the eastern part of the United States, and by the American College of Medical Toxicology in the western part of the United States.  More information on the PEHSU national program can be found here: national PEHSU website.

The Western States PEHSU Mission

Our mission is to improve the environmental health of pregnant women and children by:

  • enhancing educational and consultative services to clinicians, health professionals, and the community.
  • providing evidence-based information from a network of experts in environmental health.

The Western States PEHSU Vision

The PEHSU network is the globally recognized go to resource for pediatric environmental health expertise for clinicians, health professionals, and communities.

The Western States PEHSU values

Our goal is to provide services with integrity that are:

  • High quality
  • Reliable
  • Professional
  • Ethical
  • Respectful
  • Objective

More information on the Pediatric Environmental Health Specialty Units is available here.

Our Team

Our team includes Pediatricians, Pediatric Clinical Toxicologists, Occupational & Environmental Medicine Physicians, Nurses and Industrial Hygienists and Public Health experts.

Our Partners

*The PEHSU work with CIRCLE is supported by NIEHS grant 1P01ES018172 and US EPA grant RD83451101 for the Center for Integrative Research on Childhood Leukemia and the Environment at the University of California, Berkeley, Catherine Metayer PI.

The Western States Pediatric Environmental Health Specialty Unit webpages are supported by the American Academy of Pediatrics (AAP) and funded (in part) by the cooperative agreement award number 5 NU61TS000296-02-00 from the Agency for Toxic Substances and Disease Registry (ATSDR).

Acknowledgement: The U.S. Environmental Protection Agency (EPA) supports the PEHSU by providing partial funding to ATSDR under Inter-Agency Agreement number DW-75-95877701. Neither EPA nor ATSDR endorse the purchase of any commercial products or services mentioned in PEHSU publications.


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