Timothy Wassenaar, MD

Patient Rating
4.9 / 5 (Based on 180 reviews)

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Timothy Wassenaar

About me

Philosophy of care

“My goal is to deliver personalized, compassionate and family-focused care to my patients. I have an interest in clinical research and have been awarded several research grants and studies, which provide my patients with clinical research opportunities.”



Hobbies and Personal Interests

Dr. Wassenaar is married, and he enjoys spending time with his family, biking and running marathons.

My locations

Medical education

Medical School

The Chicago Medical School, Chicago, IL


University of Wisconsin Hospital and Clinics, Madison, WI


University of Wisconsin Hospital and Clinics, Madison, WI, Hematology


Board Certifications

  • Hematology
  • Internal medicine
  • Palliative medicine

My Videos


March 16, 2022
March 15, 2022
Dr. Wassenaar is brilliant and incredible. I am very fortunate to receive care and follow up from him.
March 15, 2022
Dr Tim Wassenaar is the best kind of doctor- has the science, art and humanistic pieces!
March 2, 2022
I was very impressed with the entire staff at the UW Cancer at ProHealth. The nurses and support staff was excellent.
March 2, 2022
It appears I only need blood work, hematologist once a year with blood work at 6 months.
March 2, 2022
Have seen this provider many times over last 10 yrs. and have always been pleased with the care.
February 22, 2022
All good.
February 9, 2022
This was a cancer checkup
February 8, 2022
Everything was fine. My only complaint is that these checks up could have been a quick phone call & not a full office visit. But they won't let me stay a patient w/o an office visit.
February 8, 2022
I would not go to any other concern dr. But Dr. Wassenaar. I like him very very much.
February 2, 2022
Very happy with ProHealth - Pewaukee WI.
January 31, 2022
A good visit!
January 26, 2022
This is the first time I had to see Dr. Wassenaar. I had a lot of questions. He really took his time explaining things to me. He was not rushed at all.
January 19, 2022
Everything was excellent .. Facilities state of art.. Employees very attentive.
January 19, 2022
Total visit was all well done.
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