18 Hematology (Internal Medicine) providers practice in Wisconsin, including 9 (50%) offering telehealth. The largest concentration is in Madison. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
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| Hematology (Internal Medicine) in Madison | 11 providers |
| Hematology (Internal Medicine) in La Crosse | 3 providers |
| Hematology (Internal Medicine) in Marshfield | 1 providers |
| Hematology (Internal Medicine) in New Berlin | 1 providers |
| Hematology (Internal Medicine) in Wisconsin Rapids | 1 providers |
| Hematology (Internal Medicine) in Slinger | 1 providers |
From CMS Medicare enrollment records covering 12 of the 18 providers listed here (67%). Providers who do not bill Medicare are not included in these figures.
| Group (as registered with Medicare) | Hematologists (Internal Medicine) | All clinicians in group | Main city |
| University of Wisconsin Medical Foundation Inc. | 8 | 2,537 | Madison |
| Gundersen Lutheran Medical Center Inc. | 2 | 888 | La Crosse |
| Hospital | City | Ownership | CMS star rating | Hematologists (Internal Medicine) affiliated |
| University of Wi Hospitals & Clinics Authority | Madison | Government | 5 of 5 | 8 |
| Sauk Prairie Hospital | Prairie Du Sac | Nonprofit | 5 of 5 | 2 |
| Gundersen Lutheran Medical Center | La Crosse | Nonprofit | 4 of 5 | 2 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
There are 18 Hematology (Internal Medicine) providers with active NPI records practicing in Wisconsin, according to federal NPPES data refreshed monthly.
Yes. 9 of the 18 Hematology (Internal Medicine) providers in Wisconsin (about 50%) report offering telehealth services in CMS data.
Madison (11), La Crosse (3), Marshfield (1) have the highest concentration of Hematology (Internal Medicine) providers in Wisconsin.
Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Among 12 Hematologists (Internal Medicine) in Wisconsin enrolled in Medicare, 0% bill through a solo or small practice with fewer than 10 clinicians, 0% through a mid-size group of 10 to 99, and 100% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
According to CMS facility affiliation records, the Wisconsin hospitals where the most Hematologists (Internal Medicine) hold privileges are University of Wi Hospitals & Clinics Authority in Madison; Sauk Prairie Hospital in Prairie Du Sac; Gundersen Lutheran Medical Center in La Crosse.
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