Eileen Alessandro, NP
NPI 1649601758 · Family Nurse Practitioner · West Islip, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eileen Alessandro, NP is a Family Nurse Practitioner provider in West Islip, NY (NPI 1649601758).
Provider details
- NPI number
- 1649601758
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- F336476-1 (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 tenure25% of score
12 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
464 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 228 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 184 | $62 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 52 | $34 |
Typical Medicare-allowed amounts for these services range $8–$62 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 715 | 391 |
| Metoprolol Succinate | 542 | 288 |
| Rosuvastatin Calcium | 386 | 215 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 216 | 124 |
| Apixabanbrand: Eliquis | 192 | 102 |
| Amlodipine Besylate | 183 | 102 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,468 across 48 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
- 2013-11-29
- Last updated
- 2017-04-12
Frequently asked questions
- What is Eileen Alessandro's NPI number?
- Eileen Alessandro's National Provider Identifier (NPI) is 1649601758, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eileen Alessandro's specialty?
- Eileen Alessandro is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Eileen Alessandro located?
- Eileen Alessandro's practice location on file with NPPES is 540 Union Blvd, West Islip, NY 11795-3105.
- What is Eileen Alessandro's phone number?
- The practice phone number listed in the NPPES registry for Eileen Alessandro is (631) 669-2555.
- Does Eileen Alessandro accept Medicare?
- Eileen Alessandro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eileen Alessandro's NPI active?
- Yes — Eileen Alessandro's NPI (1649601758) is active in the NPPES registry as of the last update on 2017-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.