Radiological Associates of Sacramento

Radiological Associates of Sacramento (RAS) is a premier multi-specialty radiology group based in Northern California, providing comprehensive diagnostic and interventional medical imaging services. Founded in 1917, it is one of the oldest and largest private radiology practices in the United States, offering expertise in areas such as radiation oncology, nuclear medicine, and women's imaging. The group operates multiple outpatient imaging centers and provides professional services to numerous hospitals throughout the Sacramento region. In 2020, RAS joined Radiology Partners, the largest physician-led radiology practice in the U.S., to enhance its clinical infrastructure and scale.