Malgorzata Mierzejewski, MSN,RN,FNP-BC
NPI 1750858288 · Family Nurse Practitioner · East Northport, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Malgorzata Mierzejewski, MSN,RN,FNP-BC is a Family Nurse Practitioner provider in East Northport, NY (NPI 1750858288).
Provider details
- NPI number
- 1750858288
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN,RN,FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- F343483-1 (NY)
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 tenure28% of score
7 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
153 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) |
|---|---|---|
| Automated Urinalysis Test81003 | 41 | $2 |
| Blood Count, Hemoglobin85018 | 34 | $2 |
| Stool Analysis for Blood to Screen for Colon Tumors82270 | 31 | $4 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 21 | $40 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 14 | $56 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 12 | $89 |
Typical Medicare-allowed amounts for these services range $2–$89 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 34 | 14 |
| Estradiol | 13 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 | 12 |
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 no Part D record, 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
- 2018-11-02
- Last updated
- 2018-11-16
Frequently asked questions
- What is Malgorzata Mierzejewski's NPI number?
- Malgorzata Mierzejewski's National Provider Identifier (NPI) is 1750858288, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Malgorzata Mierzejewski's specialty?
- Malgorzata Mierzejewski is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Malgorzata Mierzejewski located?
- Malgorzata Mierzejewski's practice location on file with NPPES is 7 Pulaski Rd, East Northport, NY 11731-2442.
- What is Malgorzata Mierzejewski's phone number?
- The practice phone number listed in the NPPES registry for Malgorzata Mierzejewski is (631) 261-3322.
- Does Malgorzata Mierzejewski accept Medicare?
- Malgorzata Mierzejewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Malgorzata Mierzejewski's NPI active?
- Yes — Malgorzata Mierzejewski's NPI (1750858288) is active in the NPPES registry as of the last update on 2018-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.