Dr. Aragon is adjunct faculty at the School of Public Health where he teaches epidemiologic R computing/data science. He is 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. As PHD director, I direct public health services. His passions include health equity, lean quality improvement, and leadership development to transform organizations and communities into healthy, thriving, learning, healing, and resilient organizations and communities. He graduated from Harvard Medical School and trained in primary care internal medicine and infectious diseases (UC San Francisco), and in epidemiology (DrPH, UC Berkeley School of Public Health).