William Ranum, MD Emergency Medicine, Family Medicine in Waunakee, WI
SSM Health Dean Medical Group
1300 S. Century Ave. Waunakee, WI 53597
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.
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.
About Me
Specialties
Emergency Medicine
Family Medicine
Gender
Male
Education
UW Hospital Graduate Medical Education
Residency, 1990
UW Hospital Graduate Medical Education
Internship, 1988
University of Wisconsin School of Medicine and Public Health
Medical School, 1987
Hospital Affiliations
SSM Health St. Mary's Hospital - Madison
Certifications
Drug Enforcement Administration
Wisconsin Medical Examining Board
Medical Interests
Obstetrical care
Primary care
Reviews
Rating Breakdown
Reviews are measured on a scale of 1 to 5, with 5 being the best score.
Question Breakdown
4.9Overall Experience5.0Listened Carefully4.9Explained Things Clearly4.9Knew Medical History4.9Involved in Care Decisions5.0Showed Courtesy & Respect
Patient Reviews
SSM Health only displays patient satisfaction data for providers included in our survey process and who have a minimum of 30 returned surveys. The overall rating is an average of all responses to the survey questions listed below. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy. Learn more about our survey.
4.9 out of 5
174 ratings,
82 reviews
8/28/2026
I have been seeing Dr. Ranum for over 30 years and will miss him tremendously when he leaves. You will be losing a wonderful man.
8/27/2026
Attentive to details
8/20/2026
I can’t say enough wonderful things about Dr. Ranum. I’ve been his patient for over 30 years, and there is truly no one I would trust more with my care. He is everything you hope for in a doctor—knowledgeable, thorough, compassionate, patient, and genuinely invested in the people he cares for. He listens. He never makes you feel rushed or dismissed, and he takes the time to figure things out, even when you show up with something a little unusual! 😊 After more than three decades, he knows me incredibly well, and there is such a comfort in having a doctor who knows your history and truly knows you as a person. His combination of experience, intuition, kindness, and humor is something very special. I feel incredibly fortunate to have had him as my doctor for all these years. Thirty-plus years of consistently exceptional care says more than any five-star review ever could. He is simply the absolute best, and I couldn’t recommend him more highly.
8/20/2026
I am very sorry to hear that Dr. Ranum may be retiring. This will be a huge loss to our community
8/11/2026
He is the best doctor.
Map & Directions
SSM Health Dean Medical Group
1300 S. Century Ave.Waunakee, WI 53597
Mon
8:00 am - 5:00 pm
Tue
8:00 am - 5:00 pm
Wed
8:00 am - 5:00 pm
Thu
8:00 am - 5:00 pm
Fri
8:00 am - 5:00 pm
Sat
Closed
Sun
Closed
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