John Mazzei, FNP
Family Nurse Practitioner · Poughkeepsie, NY
John Mazzei, FNP is a family nurse practitioner with a practice address in Poughkeepsie, New York, and NPI 1265801377, issued on Sep 18, 2015. Check the license (New York F339830, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Mazzei
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- F339830 NY
Self-reported in NPPES; status is on the state search - Practice location
- 74 West Cedar St, Poughkeepsie, NY 12601
- Phone
- (845) 454-6174
- Enumerated
- Sep 18, 2015
- Record last updated
- Feb 20, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (845) 454-5371
- Medicare enrollment
- Enrolled (PECOS I20151021002112); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →
Verify John Mazzei in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F339830Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family nurse practitioner in 2024
38 Medicare Part D claims for 23 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium19 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.7 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $58.24
3 payments; by number, the most common kind was food and beverage; the largest payer was Organon Llc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Premier Medical Group OF The Hudson Valley PCPoughkeepsie, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Mazzei among 14,805 family nurse practitioner records in New York
John Mazzei, 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 2015, is newer than 33% of them.
- NPI issued2015 · 33% of these records are older, 63% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated2015 · median 2019 among the 7,239 with a school on file
- Record last updated2017 · 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).
112 family nurse practitioner records list a practice address in Poughkeepsie
They are 112 of the 3,701 NPPES records with a practice address in Poughkeepsie, and 14,805 family nurse practitioner records in New York.
All 14,805 in New York → Every provider in Poughkeepsie → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Caroline Austin-Mattison, F.N.P.Poughkeepsie, NY 126011760674451
- Doreen Bischof, FNPPoughkeepsie, NY 126011720279219
- Lori Brown-Halbert, FNPPoughkeepsie, NY 126011669466389
- Stephen Burns, RN FNPPoughkeepsie, NY 126011184735623
- Sasha Gaer, NPPoughkeepsie, NY 126011568424034
- Rebecca Hopper, NPPoughkeepsie, NY 126011134157688
- Geraldine Kenny, NPPoughkeepsie, NY 126011750580908
- Stephen Lebitsch, FNPPoughkeepsie, NY 126011447311154
Common questions
What is John Mazzei, FNP's NPI number?
John Mazzei, FNP's National Provider Identifier (NPI) is 1265801377, issued on Sep 18, 2015. An NPI identifies a provider in billing; it is not a license.
Where is John Mazzei, FNP located?
The NPPES record lists a practice address at 74 West Cedar St, Poughkeepsie, NY, 12601. Phone: (845) 454-6174. Providers update this record themselves, so call before visiting.
How can I verify John Mazzei, FNP's license?
NPPES lists New York license number F339830, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does John Mazzei, FNP prescribe under Medicare Part D?
In 2024, John Mazzei, FNP had 38 Medicare Part D claims for 23 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is John Mazzei, FNP's MIPS final score?
The 2023 MIPS final score is 86.7 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.
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.