Peter Polewski, MD
NPI 1659784940 · Hematology & Oncology Physician · Grafton, WI
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peter Polewski, MD is a Hematology & Oncology Physician provider in Grafton, WI (NPI 1659784940).
Provider details
- NPI number
- 1659784940
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 65955 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,043 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 443 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 273 | $132 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 177 | $90 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 68 | $123 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 65 | $61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 101 | 30 |
| Hydroxyurea | 77 | 23 |
| Dexamethasone | 69 | 22 |
| Prochlorperazine Maleate | 60 | 36 |
| Abiraterone Acetate | 53 | — |
| Prednisone | 50 | 15 |
| Duloxetine Hcl | 47 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-06-04
- Last updated
- 2023-03-20
- Certified
- 2023-03-20
Frequently asked questions
- What is Peter Polewski's NPI number?
- Peter Polewski's National Provider Identifier (NPI) is 1659784940, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peter Polewski's specialty?
- Peter Polewski is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Peter Polewski located?
- Peter Polewski's practice location on file with NPPES is 975 Port Washington Rd, Grafton, WI 53024-9201.
- What is Peter Polewski's phone number?
- The practice phone number listed in the NPPES registry for Peter Polewski is (262) 329-1000.
- Does Peter Polewski accept Medicare?
- Peter Polewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peter Polewski's NPI active?
- Yes — Peter Polewski's NPI (1659784940) is active in the NPPES registry as of the last update on 2023-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.