Cyber Security Incident
Madison Medical Affiliates is currently experiencing a business interruption associated with the cyber security incident at Ascension Health. As a result, access to electronic medical records and patient schedules have been impacted. Despite these limitations, Madison Medical remains open at all locations to meet your health care needs. If you are visiting our clinics during this interruption, please bring a list of your current medications.
We are working diligently to ensure this disruption has minimal impact on our clinic operations. We will share more information as it becomes available. Thank you for your patience and thank you for entrusting Madison Medical with your care.
Rachel Oosterbaan, M.D.
Dr. Rachel Oosterbaan attended medical school at Wayne State University in Detroit, and she completed her residency in Internal Medicine at Harvard Medical School during her postdoctoral training. In addition to serving as an attending physician at Northwestern Medicine® Lake Forest Hospital in Lake Forest, Illinois and at Northwestern Memorial Hospital in downtown Chicago over the past 16 years, Dr. Oosterbaan also worked as an assistant professor at Northwestern University’s Feinberg School of Medicine since 2000. Dr. Oosterbaan is board certified in Internal Medicine. Her most recent achievements include being voted by Castle Connolly as a “Top Doctor” in the Chicago metropolitan area, as well as voted by US News Report as a “Best Doctor.”
Office Locations
Seton G18
13133 N. Port Washington Road
Suite G18
Mequon, WI 53097
Appointments: (262)-243-5000
Additional Internal Medicine Physicians
Schedule An Appointment
Get started on the road to healing by scheduling an appointment with our Rachel Oosterbaan, M.D. Call for an appointment or complete our contact form.
Seton Professional Building (262) 243-5000