Dennis Dobrzynski, MD
NPI 1942223144 · Hematology & Oncology Physician · Butler, PA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis Dobrzynski, MD is a Hematology & Oncology Physician provider in Butler, PA (NPI 1942223144).
Provider details
- NPI number
- 1942223144
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101239089 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
933 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 | 300 | $104 |
| 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 | 278 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 140 | $154 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 135 | $8 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 44 | $74 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 166 | 48 |
| Prednisone | 81 | 18 |
| Abiraterone Acetate | 80 | 13 |
| Apixabanbrand: Eliquis | 71 | 14 |
| Hydroxyurea | 66 | 14 |
| Dexamethasone | 62 | 21 |
| Acalabrutinib Maleatebrand: Calquence | 34 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$792 across 47 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
- 2006-07-26
- Last updated
- 2021-10-28
- Certified
- 2021-10-28
Frequently asked questions
- What is Dennis Dobrzynski's NPI number?
- Dennis Dobrzynski's National Provider Identifier (NPI) is 1942223144, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis Dobrzynski's specialty?
- Dennis Dobrzynski is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis Dobrzynski located?
- Dennis Dobrzynski's practice location on file with NPPES is 129 Oneida Valley Rd, Butler, PA 16001-2252.
- What is Dennis Dobrzynski's phone number?
- The practice phone number listed in the NPPES registry for Dennis Dobrzynski is (724) 482-2717.
- Does Dennis Dobrzynski accept Medicare?
- Dennis Dobrzynski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis Dobrzynski's NPI active?
- Yes — Dennis Dobrzynski's NPI (1942223144) is active in the NPPES registry as of the last update on 2021-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.