Our Leadership Team

  • Margie Chen

    Statewide Leadership Team, New Member Welcome

    Margie Chen is a retired obstetrician-gynecologist in San Francisco, CA.

  • Hina Fullar

    Statewide Leadership Team, Advocacy Campaign Co-Lead, New Member Welcome Facilitator, Culture Club

    Hina Fullar is an outpatient psychiatrist in Walnut Creek, CA.

  • Ashley McClure

    Statewide Leadership Team

    Ashley McClure is a primary care physician in Oakland, CA. She is CHN’s co-founder and Executive Director.

  • Brenda Nuyen

    Statewide Leadership Team

    Brenda Nuyen is a comprehensive ophthalmologist in Los Angeles, CA.

  • Lisa Chang

    Statewide Leadership Team

    Lisa is a retired ophthalmologist and lives in Alamo, CA.

  • Whitney Villa Greswold

    Statewide Leadership Team

    Whitney Villa Greswold has worked in health and sustainability sectors. She is Climate Health Now’s Director of Operations and Development

  • Bill Pevec

    Healthcare Sustainability Coach

    Bill is a retired professor and chief of Vascular Surgery at UC Davis, located in Sacramento, CA.

  • Pam Lee

    Healthcare Sustainability Coach

    Pam Lee is an infectious disease physician in Torrance, CA.

  • Carolina Fonseca

    CHN Speaks Co-Lead

    Carolina Fonseca is a pediatric fellow in San Francisco, CA.

  • Ros Harder

    New Member Welcome Co-lead, Culture Club Co-lead

    Ros Harder is a medical social worker in Oakland, CA.

  • Michelle Fontana

    Advocacy Campaign Team

    Michelle Fontana, RN is a Practice Director in primary care and lives in Berkeley, CA

  • Wendy Bernstein

    Advocacy Campaign Team Chair

    Wendy Bernstein is a community psychiatrist and educator working from Berkeley, California. 

  • Keegan Bowers

    Advocacy Campaign Team

    Keegan is an East Bay Pediatrician and UCSF EaRTH Center Reach Fellow, located in Berkeley, CA

  • Tony DeRiggi

    Healthcare Sustainability Coach

    Tony DeRiggi is a retired pediatrician in Sacramento. 

Our Advocacy Advisory Team

  • Jason Pfeifle

    Center for Biological Diversity

  • Will Barrett

    American Lung Association

  • Mariela Ruacho

    American Lung Association

  • Jose Torres

    Building Decarbonization Coalition

  • Barry Vesser

    The Climate Center

  • Cesar Aguirre

    Central California Environmental Justice Network

  • Bill Magavern

    Coalition for Clean Air

Climate Health Now is the California state affiliate of the Medical Society Consortium on Climate & Health