William Ranum is a board certified family medicine physician. He obtained his undergraduate degree from the University of Wisconsin-Madison and earned his medical degree from the University of Wisconsin School of Medicine and Public Health-Madison. He completed his internship and residency at the University of Wisconsin - SSM Health St. Mary's Hospital-Madison.

Ranum's practice is focused on continuity of care and obstetrical care. He provides low-risk prenatal care until 32 weeks - no deliveries.

Dr. Ranum is board certified by the American Board of Family Medicine.