Quick answers
- Does Kathleen S. Hemauer accept Medicare assignment?
- Yes. Medicare's clinician data says Kathleen S. Hemauer accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Kathleen S. Hemauer see?
- In 2024, CMS data shows 252 Original Medicare patients and 590 services for Kathleen S. Hemauer. This counts Original Medicare only and measures volume, not quality.
- What is Kathleen S. Hemauer's NPI number?
- 1326467234. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Kathleen S. Hemauer, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 252 |
|---|---|
| Services billed to Medicare | 590 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)209 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)195 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)69 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)29 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)28 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)63%
- Arthritis47%
- Chronic kidney disease35%
- Ischemic heart disease32%
Hospitals where Kathleen S. Hemauer works
Medicare's Facility Affiliation Data lists Kathleen S. Hemauer at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Oconomowoc Memorial HospitalOconomowoc, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520062
- Watertown Memorial HospitalWatertown, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520116
- Waukesha Memorial HospitalWaukesha, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520008
Practice locations
Addresses where Kathleen S. Hemauer is enrolled with Medicare (CMS data updated October 2, 2026).
- 791 Summit AveOconomowoc, WI 53066 (262) 569‑9400
- N16W24131 Riverwood DrWaukesha, WI 53188 (262) 696‑0808
Group practices
Medicare enrollment lists Kathleen S. Hemauer as a member of this group (CMS data updated October 2, 2026).
- Prohealth Medical Group Inc479 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Other clinicians in Prohealth Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326467234 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians