Katherine Walczak, DNP
NPI 1851178404 · Oncology Clinical Nurse Specialist · Milwaukee, WI
Katherine Walczak, DNP is a Oncology Clinical Nurse Specialist provider in Milwaukee, WI (NPI 1851178404).
Provider details
- NPI number
- 1851178404
- Entity type
- Individual
- Primary specialty
- Oncology Clinical Nurse SpecialistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 170636-30 (WI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$347 across 3 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
Registry dates
- Enumerated
- 2023-09-08
- Last updated
- 2023-09-08
- Certified
- 2023-09-08
Frequently asked questions
- What is Katherine Walczak's NPI number?
- Katherine Walczak's National Provider Identifier (NPI) is 1851178404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Walczak's specialty?
- Katherine Walczak is listed in the NPPES registry with a primary specialty of Oncology Clinical Nurse Specialist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Walczak located?
- Katherine Walczak's practice location on file with NPPES is 9200 W Wisconsin Ave, Milwaukee, WI 53226-3522.
- What is Katherine Walczak's phone number?
- The practice phone number listed in the NPPES registry for Katherine Walczak is (414) 805-4690.
- Is Katherine Walczak's NPI active?
- Yes — Katherine Walczak's NPI (1851178404) is active in the NPPES registry as of the last update on 2023-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.