Timothy Wassenaar, MD

Hematology
Patient Rating
5 / 5 (Based on 273 reviews)
Read reviews | About reviews
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262-696-5690
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Timothy Wassenaar

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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.”

Gender

Male

Hobbies and Personal Interests

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

My locations

Education

Medical School

The Chicago Medical School, Chicago, IL

Residency

University of Wisconsin Hospital and Clinics, Madison, WI

Fellowship

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

Certifications

Board Certifications

  • Hematology
  • Palliative medicine

Reviews

January 28, 2026
Everyone I encounter in the office is so welcoming and nice.
January 26, 2026
Doctor Wassenaar is very cordial and easy to work with. My questions were answered very clearly and in a way that was easy to understand. He took his time and was very thorough.
January 26, 2026
I'm happy with all of my Prohealthcare providers
January 23, 2026
Mark is treated with kindness and respect by all the pro health providers he sees during his oncology appointments.
January 21, 2026
Yearly checkup and received excellent help! Great doctor!
January 20, 2026
Very good experience.
January 16, 2026
Dr Wassenaar is the best
January 14, 2026
Dr. Wassenaar so very wonderful!!!!
January 12, 2026
I'm always treated very well at pro health.
January 7, 2026
There was a wonderful, full team approach to the entire visit leading to a most informative and enjoyable experience.
January 6, 2026
Always a great experience when seeing Dr. Wassenaar as well as being cared for by his team.
January 6, 2026
Everyone at this office was very nice. Very impressed with Dr. Wassenaar and Katie the nurse practitioner.
January 2, 2026
Excellent.
December 23, 2025
Excellent experience
December 22, 2025
Was excellent as usual.
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