Scripps Mercy Hospital San Diego campus physician Fred Simon, MD holds a listing at 4077 Fifth Avenue, the Hillcrest Level I Trauma Center and teaching hospital that has served central San Diego since 1890. Patients managed on this campus have access to infectious disease consults through Scripps Mercy affiliates such as Dr. Michele L. Ritter, MD for outpatient HIV and complex antibiotic management. The 4077 Fifth Avenue building sits on the same block as the Conrad Prebys Emergency and Trauma Center, the O'Toole Breast Care Center, and the multilevel outpatient tower that serves Scripps' central San Diego clinic network. Diagnostic imaging for complex musculoskeletal and neurologic studies cross-refers north to UCSD Medical Center Radiology at the UC San Diego Hillcrest campus one mile up Fourth Avenue. Scripps Mercy San Diego operates as the county's only Catholic medical center and carries teaching affiliations for internal medicine and general surgery residents who rotate through the 4077 Fifth Avenue wards. The most complex presentations on this campus are polytrauma resuscitations arriving through the Prebys trauma bay, where Level I verification mandates immediate availability of trauma surgery, orthopedics, neurosurgery, and interventional radiology.