Mariusz Niedzwiecki
NPI 1083281679 · Nurse Practitioner · San Jose, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariusz Niedzwiecki is a Nurse Practitioner provider in San Jose, CA (NPI 1083281679).
Provider details
- NPI number
- 1083281679
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 95017485 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 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
230 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 60 | $116 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $83 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 26 | $150 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 23 | $8 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 22 | $16 |
| Automated Urinalysis Test81003 | 18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 23 | 23 |
| Doxycycline Monohydrate | 19 | 19 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 13 | 13 |
| Fluticasone Propionate | 13 | — |
| Ofloxacin | 12 | 12 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-06-10
- Last updated
- 2024-09-30
- Certified
- 2024-09-30
Frequently asked questions
- What is Mariusz Niedzwiecki's NPI number?
- Mariusz Niedzwiecki's National Provider Identifier (NPI) is 1083281679, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariusz Niedzwiecki's specialty?
- Mariusz Niedzwiecki is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mariusz Niedzwiecki located?
- Mariusz Niedzwiecki's practice location on file with NPPES is 2514 Berryessa Rd, San Jose, CA 95132-2947.
- What is Mariusz Niedzwiecki's phone number?
- The practice phone number listed in the NPPES registry for Mariusz Niedzwiecki is (408) 272-1431.
- Does Mariusz Niedzwiecki accept Medicare?
- Mariusz Niedzwiecki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariusz Niedzwiecki's NPI active?
- Yes — Mariusz Niedzwiecki's NPI (1083281679) is active in the NPPES registry as of the last update on 2024-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.