James Zenkus, FNP
Nurse Practitioner · Westborough, MA
James Zenkus, FNP is a nurse practitioner with a practice address in Westborough, Massachusetts, and NPI 1952945131, issued on Oct 31, 2019. Check the license (Massachusetts RN2308310, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James Zenkus
- Credential
- FNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- RN2308310 MA
Self-reported in NPPES; status is on the state search - Practice location
- 139 Turnpike RD, Westborough, MA 01581
- Phone
- (508) 882-7300
- Enumerated
- Oct 31, 2019
- Record last updated
- Oct 10, 2024
- Fax
- (508) 882-7312
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →
Also registered at 139 Turnpike RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James Zenkus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN2308310Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average nurse practitioner in 2024
43 Medicare Part D claims for 23 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
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.
James Zenkus among 3,480 nurse practitioner records in Massachusetts
James Zenkus, FNP is one of 3,480 nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 63% of them.
- NPI issued2019 · 63% of these records are older, 32% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2024 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 nurse practitioner records list a practice address in Westborough
They are 8 of the 565 NPPES records with a practice address in Westborough, and 3,480 nurse practitioner records in Massachusetts.
All 3,480 in Massachusetts → Every provider in Westborough → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Barbara Belony, NPWestborough, MA 015811669060158
- Allison Camacho, NPWestborough, MA 015811184841736
- Jessica Labelle, CNPWestborough, MA 015811801301676
- Julia Lombardi, NPWestborough, MA 015811023082815
- Kathleen Murphy, NPWestborough, MA 015811093818668
- Pamela Ouellette, NPWestborough, MA 015811740480946
- Suzanne Shannahan, NPWestborough, MA 015811457315574
- Christina Howe, NPWest Boylston, MA 015831538120134
Common questions
What is James Zenkus, FNP's NPI number?
James Zenkus, FNP's National Provider Identifier (NPI) is 1952945131, issued on Oct 31, 2019. An NPI identifies a provider in billing; it is not a license.
Where is James Zenkus, FNP located?
The NPPES record lists a practice address at 139 Turnpike RD, Westborough, MA, 01581. Phone: (508) 882-7300. Providers update this record themselves, so call before visiting.
How can I verify James Zenkus, FNP's license?
NPPES lists Massachusetts license number RN2308310, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does James Zenkus, FNP prescribe under Medicare Part D?
In 2024, James Zenkus, FNP had 43 Medicare Part D claims for 23 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.
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.