Bozena Witek, MD
NPI 1275639585 · Hematology & Oncology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bozena Witek, MD is a Hematology & Oncology Physician provider in Chicago, IL (NPI 1275639585).
Provider details
- NPI number
- 1275639585
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036076914 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,710 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 685 | $132 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 270 | $132 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 265 | $29 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 258 | $15 |
| Enhancing Oncology Model (eom) Monthly Enhanced Oncology Services (meos) Payment for Eom Enhanced ServicesM0010 | 182 | $77 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 188 | 41 |
| Gabapentin | 147 | 31 |
| Apixabanbrand: Eliquis | 81 | 17 |
| Pantoprazole Sodium | 66 | 22 |
| Potassium Chloride | 56 | 17 |
| Anastrozole | 54 | 14 |
| Prednisone | 50 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,805 across 126 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
- 2006-09-15
- Last updated
- 2021-12-17
- Certified
- 2021-12-17
Frequently asked questions
- What is Bozena Witek's NPI number?
- Bozena Witek's National Provider Identifier (NPI) is 1275639585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bozena Witek's specialty?
- Bozena Witek is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Bozena Witek located?
- Bozena Witek's practice location on file with NPPES is 7447 W Talcott Ave, Chicago, IL 60631-3745.
- What is Bozena Witek's phone number?
- The practice phone number listed in the NPPES registry for Bozena Witek is (773) 774-0042.
- Does Bozena Witek accept Medicare?
- Bozena Witek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bozena Witek's NPI active?
- Yes — Bozena Witek's NPI (1275639585) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.