Population health is “a systems framework for studying and improving the distribution and determinants of health and quality of life states through collective action and learning.”

Data Science is the science of turning data into knowledge for action. Knowledge integration is the management, synthesis, and translation of knowledge into decision support systems to guide, influence, and inform policy and practice. The translation continuum spans scientific discovery and innovation to public health practice and population health impact.

Medical Epidemiologist

Tomás J Aragón

I am the Health Officer of the City & County of San Francisco, and Director of the Population Health Division at the Department of Public Health. As Health Officer, I exercise leadership and legal authority to protect and promote health and equity. As PHD Director, I direct public health services.
My passions are health equity, leadership development, organizational transformation, and collective impact. I am a graduate of the UCSF / California HealthCare Foundation Leadership Program, and a Fellow in the Kresge Foundation Emerging Leaders in Public Health Program.
I teach epidemiologic computing/data science at the UC Berkeley School of Public Health. I trained in primary care internal medicine, clinical infectious diseases, and epidemiology. My family immigrated from Nicaragua and I was raised in San Francisco’s Mission District. (Curriculum vitae)
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Tomás J Aragón

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Introduction In May 2014, the Public Health Leadership Forum published “The High Achieving Governmental Health Department in 2020 as the Community Chief Health Strategist.” This groundbreaking paper started with the following statement: Local and state health departments need to adapt and evolve if governmental public health is to address emerging health demands, minimize current as well as looming pitfalls, and take advantage…

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Download updated and enhanced PDF version of blog below. “Leadership is getting results in a way that inspires trust” … SMR Covey What’s your leadership equation? What concise mental model of leadership do you hold that reminds you of key components and how they are related? In fall 2014, I graduated from the UCSF California Healthcare…

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My road to discovering the practice of cultural humility was long, complex, and iterative. I have struggled with how to use our technical expertise to address health inequities and reduce health disparities. In April 2014, SFDPH launched the Black/African American Health Initiative (BAAHI) which required me to question my assumptions and redefine my role. This…

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This paper was prepared by RESOLVE as part of the Public Health Leadership Forum   with funding from the Robert Wood Johnson Foundation. John Auerbach, Director of Northeastern University’s Institute on Urban Health Research, also put substantial time and effort into authoring the document with our staff. The concepts put forth are based on several…

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In this presentation I introduce the “SFDPH Population Health Division Controlling Infectious Diseases Model.” This model integrates concepts from understanding transmission mechanisms, transmission dynamics, and transmission containment. The Model is most useful when facing novel microbial threats and we need simple framework for public health action.

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In my professional role, I am interviewed by the media to explain why this flu season is so “deadly.” I have a more mathematical explanation at the bottom of the page (which is challenging to simplify). However, Rob Roth from KTVU Channel 2 interviewed me and suggested the term “susceptible list” to describe the people who…

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