NPPES file of Aug 9, 2026

Alyssa Harper, FNP

Family Nurse Practitioner · Greenlawn, NY

Alyssa Harper, FNP is a family nurse practitioner with a practice address in Greenlawn, New York, and NPI 1558941765, issued on Apr 12, 2021. Check the license (New York 347545, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1558941765
Name
Alyssa Harper
Credential
FNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
347545 NY
Self-reported in NPPES; status is on the state search
Practice location
270 Pulaski RD, Greenlawn, NY 11740
Phone
(631) 427-2273
Enumerated
Apr 12, 2021
Record last updated
Apr 12, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →

Also registered at 270 Pulaski RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sonia DavidowitzFamily Nurse Practitioner1578390167
  2. Leslie Hertling, FNPFamily Nurse Practitioner1225905466
  3. Magdalena Pomykol-Petryk, MDHematology & Oncology Physician1972578557

Verify Alyssa Harper in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 347545    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the New York license search

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96% fewer Medicare Part D claims than the average family nurse practitioner in 2024

46 Medicare Part D claims for 24 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Alyssa Harper46
  2. Specialty average1,305

Most prescribed

  1. Tamsulosin Hcl22 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Alyssa Harper among 14,805 family nurse practitioner records in New York

Alyssa Harper, FNP is one of 14,805 family nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 63% of them.

  • NPI issued2021 · 63% of these records are older, 30% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · 49% of these records are
  • Record last updated2021 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 family nurse practitioner records list a practice address in Greenlawn

They are 7 of the 205 NPPES records with a practice address in Greenlawn, and 14,805 family nurse practitioner records in New York.

All 14,805 in New York → Every provider in Greenlawn → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Lauren Anson, NPGreenlawn, NY 117401043058340
  2. Michelle Baek, FNPGreenlawn, NY 117401689082802
  3. Andrew Cotsalas, NPGreenlawn, NY 117401659002244
  4. Sonia DavidowitzGreenlawn, NY 117401578390167
  5. Leslie Hertling, FNPGreenlawn, NY 117401225905466
  6. Angie HyltonGreenlawn, NY 117401043634009
  7. Mackenzie CarrHolbrook, NY 117411659237295
  8. Melissa Gallagher, NPHolbrook, NY 117411336956473

Common questions

What is Alyssa Harper, FNP's NPI number?

Alyssa Harper, FNP's National Provider Identifier (NPI) is 1558941765, issued on Apr 12, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Alyssa Harper, FNP located?

The NPPES record lists a practice address at 270 Pulaski RD, Greenlawn, NY, 11740. Phone: (631) 427-2273. Providers update this record themselves, so call before visiting.

How can I verify Alyssa Harper, FNP's license?

NPPES lists New York license number 347545, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.

How much does Alyssa Harper, FNP prescribe under Medicare Part D?

In 2024, Alyssa Harper, FNP had 46 Medicare Part D claims for 24 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.