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COVID-19 Resourcs 

ESH Forms

ESH Manual

Medical - OHC

SLAC Security

Emergency Status

ESH Contacts

ESH Concerns - DPO

ESH Depts

ESH SharePoint

SLAC Training

ESH Coordinators

Environment, Safety, and Health Coordinators

Program directors, associate directors, group leaders, department heads, project managers, and facility representatives are authorized to designate safety coordinators to represent them in ESH matters. 

ESH Coordinators meet every six weeks. For current schedule and more information contact Mary Nelson or Terry McMahon.

Note: As of November 2023, the SLAC Phonebook links have moved to SLAC internal. We are in the process of updating the major contact links to the Stanford Directory instead. If you have questions, please email 

If you see a webpage that refers to a phone number as simply "x2399" and you are not on-site or are using a cell phone, the full number will be "650-926-xxxx"

ESH Coordinators

If you do not see your specific division or area listed, your ESH Coordinator is Greg W. Johnson 

Director's Office and Mission Support

Lead: Greg W. Johnson

Accelerator Directorate (AD)

Lead - Amy Ecclesine

Energy Sciences Directorate (ESD)

Holly McDiffett-Mahaffey

Fundamental Physics Directorate (FPD)

Norm Picker, Richard Delacruz


Lead: Marc Weibel


Ramsey Razik


Matt Padilla

Super CDMS

Christina Adair

Technology and Innovation Directorate (TID)

Hovaness Dekeyan



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