Dr. Julia Janssen is a Internal Medicine in Mission District, San Fra…read morencisco and has an experience of 8 years in this field. Dr. Julia Janssen practices at Adult & Children Dentistry: Chavez Christina DDS in Mission District, San Francisco. She completed Residency, Internal Medicine from University Of California, San Francisco in 2020 and Class of 2017 from University of California, San Francisco School of Medicine in 2017.read less