Cassandra H. Sung, MD

Located on SSM Health St. Mary's Hospital - Madison's campus, SSM Health Outpatient Center offers easy access to a variety of medical services. Driving Directions/Entrance to SSM Health Outpatient Center For GPS driving directions: Use the street address of 703 S. Brooks St., Madison, WI The main entrance for the SSM Health Outpatient Center is located at 703 S. Brooks St., across the street from the main entrance to SSM Health St. Mary’s Hospital. If parking in the ramp, take the elevator and follow posted instructions.

Sarah Hermsdorf is a physician assistant for neurosurgery. She obtained both her undergraduate degree and physician assistant certification from the University of Wisconsin - Madison. Hermsdorf is interested in all aspects of neurosurgery, but specializes in spinal pathology. She is certified by the National Commission on Certification of Physician Assistants. She is also a member of the American Academy of Physician Assistants and the Wisconsin Academy of Physician Assistants.

Kevin Au, MD, is a vascular provider who sees patients in Madison, WI.