Irene Zasa Willett, FNP
Family Nurse Practitioner · Herkimer, NY
Irene Zasa Willett, FNP is a family nurse practitioner with a practice address in Herkimer, New York, and NPI 1851794507, issued on Oct 8, 2014. Check the license (New York F338839-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Irene Zasa Willett
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- F338839-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 321 E Albany St, Herkimer, NY 13350
- Phone
- (315) 867-2761
- Enumerated
- Oct 8, 2014
- Record last updated
- Oct 8, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (315) 867-2717
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →
Also registered at 321 E Albany St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samantha Austin, FNP-BCFamily Nurse Practitioner1356016349
- Crystal Bastien, PA-CPhysician Assistant1366954711
- Michele Blanchard, FNPFamily Nurse Practitioner1801381777
- Anand Buch, PA-CPhysician Assistant1417743436
- Colleen Conway-Edwards, AGPCNPNurse Practitioner1770023731
- Elizabeth Kimani, FNPFamily Nurse Practitioner1255913489
Verify Irene Zasa Willett 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 F338839-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average family nurse practitioner in 2024
338 Medicare Part D claims for 147 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Albuterol Sulfate Hfa18 claims
- Omeprazole17 claims
- Amlodipine Besylate14 claims
- Levothyroxine Sodium14 claims
- Hydrochlorothiazide13 claims
- Losartan Potassium13 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 MIPS final score for 2023 (Medicare payment program): 86.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Irene Zasa Willett among 14,805 family nurse practitioner records in New York
Irene Zasa Willett, 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 2014, is newer than 30% of them.
- NPI issued2014 · 30% of these records are older, 67% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 49% of these records are
- Record last updated2014 · 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).
8 family nurse practitioner records list a practice address in Herkimer
They are 8 of the 306 NPPES records with a practice address in Herkimer, and 14,805 family nurse practitioner records in New York.
All 14,805 in New York → Every provider in Herkimer → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Samantha Austin, FNP-BCHerkimer, NY 133501356016349
- Michele Blanchard, FNPHerkimer, NY 133501801381777
- Michelle GorskiHerkimer, NY 133501326334798
- Elizabeth Kimani, FNPHerkimer, NY 133501255913489
- Kristin Luke, FNPHerkimer, NY 133501992018493
- William McCue, FNPHerkimer, NY 133501639457336
- Melissa Minter, FNP-CHerkimer, NY 133501831973098
- Lisa Wehner, NPHartwick, NY 133481508217134
Common questions
What is Irene Zasa Willett, FNP's NPI number?
Irene Zasa Willett, FNP's National Provider Identifier (NPI) is 1851794507, issued on Oct 8, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Irene Zasa Willett, FNP located?
The NPPES record lists a practice address at 321 E Albany St, Herkimer, NY, 13350. Phone: (315) 867-2761. Providers update this record themselves, so call before visiting.
How can I verify Irene Zasa Willett, FNP's license?
NPPES lists New York license number F338839-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Irene Zasa Willett, FNP prescribe under Medicare Part D?
In 2024, Irene Zasa Willett, FNP had 338 Medicare Part D claims for 147 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Irene Zasa Willett, FNP's MIPS final score?
The 2023 MIPS final score is 86.6 of 100. 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.