Timothy R Wassenaar, MD
Timothy R Wassenaar is a Hematology & Oncology specialist based in Waukesha, WI with over 24 years of clinical experience. Offers virtual telehealth visits.
Timothy R Wassenaar, MD practices as part of a group hematology & oncology specialist practice in Waukesha, WI. He has been in practice for 24+ years. Among his Medicare patients, common conditions include hypertension, high cholesterol, and arthritis (per CMS data).
Older · 865dNPPES updated 2024-01-10 · verify NPI on CMS · Verify license at Wisconsin Medical Examining Board
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
Elevated cholesterol or triglycerides that increase heart disease risk
Joint inflammation causing pain, swelling, and stiffness
Gradual loss of kidney function over time, often linked to diabetes or hypertension
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
The heart cannot pump blood efficiently enough to meet the body's needs
A condition where the body cannot properly regulate blood sugar levels
Excessive worry or fear that interferes with daily life
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Jan 9, 2024
Self-reported via NPPES
24 years in practice
Experienced
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Taxonomy: 207RH0003X
Virtual Hematology & Oncology Care With Timothy R Wassenaar
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Timothy R Wassenaar for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Waukesha required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Timothy R Wassenaar
Dr. Wassenaar is listed as active in the NPI registry with telehealth listed in Waukesha, WI. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (262) 696-5690.
Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.
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Contact Timothy R Wassenaar
Practice Location
N16w24131 Riverwood Dr, Waukesha, WI 53188-1106
This is a provider directory. Contact the office directly to schedule appointments.
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