Kathleen Hemauer, M.D.
NPI 1326467234 · Hematology & Oncology Physician · Waukesha, WI
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathleen Hemauer, M.D. is a Hematology & Oncology Physician provider in Waukesha, WI (NPI 1326467234).
Provider details
- NPI number
- 1326467234
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
567 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 124 | $134 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $90 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 93 | $90 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 85 | $134 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 69 | $73 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 191 | 58 |
| Letrozole | 90 | 27 |
| Apixabanbrand: Eliquis | 53 | 14 |
| Ondansetron Hcl | 44 | 32 |
| Prochlorperazine Maleate | 43 | 38 |
| Acyclovir | 42 | — |
| Tamoxifen Citrate | 42 | 16 |
| Prednisone | 39 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$52 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 791 Summit AveOconomowoc, WI 53066-3844Phone: (262) 696-5690
Registry dates
- Enumerated
- 2014-04-08
- Last updated
- 2023-07-31
- Certified
- 2023-07-31
Frequently asked questions
- What is Kathleen Hemauer's NPI number?
- Kathleen Hemauer's National Provider Identifier (NPI) is 1326467234, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Hemauer's specialty?
- Kathleen Hemauer is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Kathleen Hemauer located?
- Kathleen Hemauer's practice location on file with NPPES is N16w24131 Riverwood Dr, Waukesha, WI 53188-1106.
- What is Kathleen Hemauer's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Hemauer is (262) 696-5690.
- Does Kathleen Hemauer accept Medicare?
- Kathleen Hemauer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathleen Hemauer's NPI active?
- Yes — Kathleen Hemauer's NPI (1326467234) is active in the NPPES registry as of the last update on 2023-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.