CORONAVIRUS UPDATES: Vaccination appointments are available for anyone 5 or older. Boosters are available to anyone 12 or older. Call 262-928-5566 to schedule any dose you need. For COVID-19 testing, schedule a virtual (video) urgent care visit to obtain a provider's order for drive-up testing. Visitors and companions are no longer allowed in hospitals, emergency departments, urgent care locations and clinics. Some exceptions apply. Read more.
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“I treat patients with kindness and respect and help them make informed medical decisions as much as possible.”
Dr. Nienhuis is married and has two children. He enjoys growing roses and gardening, downhill skiing and traveling.
ProHealth Medical Group Clinic Oconomowoc
1185 Corporate Center Drive
ProHealth Medical Group Clinic Pewaukee
N16W24131 Riverwood Drive
University of Wisconsin School of Medicine and Public Health, Madison, WI
Mayo Graduate School of Medicine, Rochester, MN