Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mrs. Irene Zasa Willett, FNP

Individual provider Family Nurse Practitioner · NPI 1851794507

Mrs. Irene Zasa Willett, FNP is a Family Nurse Practitioner in Herkimer, New York. Licensed in New York. Registered with an NPI since 2014.

Licensed in
NY
In the registry since
2014
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

321 E Albany St
Herkimer, NY 13350-2016 Not confirmed with CMS for 12 years — call before visiting
Phone: (315) 867-2761
Fax: (315) 867-2717
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence F338839-1 (NY)

Record details

NPI number1851794507
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedOctober 8, 2014
Last updated in NPPESOctober 8, 2014

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients14
Services billed 14 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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