Timothy Wassenaar, MD

Patient Rating
4.9 / 5 (Based on 178 reviews)

Schedule an Appointment

Accepting new patients Insurance accepted

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


July 15, 2022
Great doctor who obviously cares greatly for his patient's welfare.
July 13, 2022
Dr. Wassenaar was sincere and interested, very pleasant. He gave me information regarding possible future medication when needed.
July 13, 2022
Upon entering the building I was directed to a computer device asking about things that I had already entered via MyChart.This was duplication and not necessary.
July 13, 2022
This was my initial visit with Dr. Wassenaar.
July 12, 2022
Went well. Covered what I needed to cover.
June 29, 2022
Amazing provider that has saved my life after life threatening blood clots. He always takes the time to listen and give all options for treatment and care.
June 21, 2022
There was a lot of buffering between questions.
June 3, 2022
I like Dr. Wassenaar very much. He has been very good to me.
June 3, 2022
Dr. Timothy Wassenaar was/is very thorough and informative.
June 1, 2022
My visits to Dr. Wassenaar's clinic & staff have always been positive. Because of his expertise my cancer is now in remission. God bless him & his staff!
June 1, 2022
I was very pleased with this provider. He is always ready to answer my questions and I feel satisfied after seeing him. His nurses (NURSES) are so helpful too.
June 1, 2022
Never bad always great w/this dr.
May 25, 2022
I saw Dr Wassenaar for a cancer second opinion. He was thorough, Informed and appeared to have a deep understanding of my disease regarding Dx, Px, and Tx. I was very satisfied that I was in good hands and came away with exactly the information that I sought.
May 25, 2022
All good.
May 20, 2022
I had a great experience. No problems. All good.
View more comments

Quick Access Links