Janet Ann Willemain, APRN
Nurse Practitioner · Florence, MA
Janet Ann Willemain, APRN is a nurse practitioner with a practice address in Florence, Massachusetts, and NPI 1275120156, issued on Dec 28, 2020. Check the license (Massachusetts RN282651, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Janet Ann Willemain
- Credential
- APRN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- RN282651 MA
Self-reported in NPPES; status is on the state search - Practice location
- 10 Main St, Florence, MA 01062
- Phone
- (413) 586-8910
- Enumerated
- Dec 28, 2020
- Record last updated
- Dec 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (413) 584-7270
- Medicare enrollment
- Enrolled (PECOS I20210217000329); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →
Also registered at 10 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Naomi Bliss, RNFamily Nurse Practitioner1326588252
- Jane Brodwyn, PSY.DClinical Psychologist1639279367
- Ashley Brown, MDPediatrics Physician1649246083
- Jeffery Cooley, MDGastroenterology Physician1417941030
Verify Janet Ann Willemain in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN282651Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average nurse practitioner in 2024
1,011 Medicare Part D claims for 323 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Famotidine359 claims
- Omeprazole352 claims
- Pantoprazole Sodium59 claims
- Gavilyte-G50 claims
- Linzess18 claims
- Creon16 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): 83.6 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).
Bills Medicare through 2 group practices
- Hampshire Gastroenterology Associates LLCFlorence, MA
- Mass General Brigham Medical Group Western Massachusetts IncNorthampton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janet Ann Willemain among 3,480 nurse practitioner records in Massachusetts
Janet Ann Willemain, APRN 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 2020, is newer than 68% of them.
- NPI issued2020 · 68% of these records are older, 25% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2020 · median 2017 among the 1,963 with a school on file
- Record last updated2020 · 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).
4 nurse practitioner records list a practice address in Florence
They are 4 of the 313 NPPES records with a practice address in Florence, and 3,480 nurse practitioner records in Massachusetts.
All 3,480 in Massachusetts → Every provider in Florence → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Sarah Nichols, NPFlorence, MA 010621396447371
- Matthew Okscin, NPFlorence, MA 010621760141394
- Lisa Rivera, NPFlorence, MA 010621992337729
- Camille Balestri, NPNorthampton, MA 010601487744124
- Abigail DunnNorthampton, MA 010601497511802
- Colby Gallagher, APRNNorthampton, MA 010601609359504
- Leslie Kelly, APRNNorthampton, MA 010601205946266
- Jennifer Lesperance, NPNorthampton, MA 010601982649729
Common questions
What is Janet Ann Willemain, APRN's NPI number?
Janet Ann Willemain, APRN's National Provider Identifier (NPI) is 1275120156, issued on Dec 28, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Janet Ann Willemain, APRN located?
The NPPES record lists a practice address at 10 Main St, Florence, MA, 01062. Phone: (413) 586-8910. Providers update this record themselves, so call before visiting.
How can I verify Janet Ann Willemain, APRN's license?
NPPES lists Massachusetts license number RN282651, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Janet Ann Willemain, APRN prescribe under Medicare Part D?
In 2024, Janet Ann Willemain, APRN had 1,011 Medicare Part D claims for 323 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Janet Ann Willemain, APRN's MIPS final score?
The 2023 MIPS final score is 83.6 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.