Population Health …

Equity — Leadership — Lean — Decision intelligence

Protecting and promoting health and well-being for all in SF

Making San Francisco the healthiest place on earth

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Tomás J. Aragón

Tomás J. Aragón

Health Officer, City & County of San Francisco; Director, Population Health Division

San Francisco Department of Public Health


I am the health officer of the City & County of San Francisco, and director of the Population Health Division (PHD) at the San Francisco Department of Public Health. Striving to embody and promote the universal values of dignity, equity, compassion and humility, I work to mobilize communities and institutions to transform policies and systems towards a culture of equity, antiracism, healing and health for all people and our planet. As health officer, I exercise leadership and legal authority to protect and promote equity and health. As PHD director, I direct public health services. I teach data science at the University of California, Berkeley School of Public Health and maintain a blog on population health decision intelligence (PHDI) at http://phdi.us.


  • Equity, antiracism and social justice
  • Population health and health equity
  • Leadership development
  • Decision intelligence
  • Lean transformation


  • MD (Medicinae Doctor), 1987

    Harvard Medical School

  • MPH (Master of Public Health), 1988

    Harvard School of Public Health

  • DrPH (Doctor of Public Health), 2000

    University of California, Berkeley

  • Strategic Decisions (certification), 2016

    Stanford University


  • 101 Grove St., Room 308, San Francisco, CA 94102-4505
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