Amanda Irene Diffin, PA-C
Physician Assistant · Leominster, MA
Amanda Irene Diffin, PA-C is a physician assistant with a practice address in Leominster, Massachusetts, and NPI 1710547385, issued on Jun 17, 2019. Check the license (Massachusetts PA7139, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Amanda Irene Diffin
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA7139 MA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Hospital RD Ste 4, Leominster, MA 01453
- Phone
- (978) 514-6300
- Enumerated
- Jun 17, 2019
- Record last updated
- Jun 27, 2024
- Medicare enrollment
- Enrolled (PECOS I20191104002595); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 100 Hospital RD Ste 4
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Colbee Daigneault, PA-C, ATCPhysician Assistant1841840006
- Tammy Zaruba, CPNPPediatric Nurse Practitioner1639310691
Verify Amanda Irene Diffin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA7139Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average physician assistant in 2024
85 Medicare Part D claims for 39 beneficiaries, against an average of 830 among the 101,058 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.
Industry payments in 2024: $312.15
16 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 64,719 providers of this specialty with any payment received $841.65 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 2 group practices
- Family Medical And Maternity Care PCLeominster, MA
- Pend Oreille County Public Hospital District NO 1Newport, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amanda Irene Diffin among 4,713 physician assistant records in Massachusetts
Amanda Irene Diffin, PA-C is one of 4,713 physician assistant records with a practice address in Massachusetts. 78% 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 50% of them.
- NPI issued2019 · 50% of these records are older, 44% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2019 · median 2019 among the 3,217 with a school on file
- Record last updated2024 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 physician assistant records list a practice address in Leominster
They are 24 of the 1,151 NPPES records with a practice address in Leominster, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Leominster → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kalyn Barger, PA-CLeominster, MA 014531528339934
- Xiaoming Bi, PA-CLeominster, MA 014531205139037
- Alison Bird, P.A.Leominster, MA 014531184636987
- Abigail Engel, P.A.Leominster, MA 014531336481191
- Vicente Esparza, PALeominster, MA 014531366403511
- Rebecca Johnston, NPLeominster, MA 014531558475426
- Charles Loucraft, PALeominster, MA 014531699865899
- Karen Lybolt, P.A.Leominster, MA 014531811969280
Common questions
What is Amanda Irene Diffin, PA-C's NPI number?
Amanda Irene Diffin, PA-C's National Provider Identifier (NPI) is 1710547385, issued on Jun 17, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Amanda Irene Diffin, PA-C located?
The NPPES record lists a practice address at 100 Hospital RD Ste 4, Leominster, MA, 01453. Phone: (978) 514-6300. Providers update this record themselves, so call before visiting.
How can I verify Amanda Irene Diffin, PA-C's license?
NPPES lists Massachusetts license number PA7139, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Amanda Irene Diffin, PA-C prescribe under Medicare Part D?
In 2024, Amanda Irene Diffin, PA-C had 85 Medicare Part D claims for 39 beneficiaries; the average among physician assistant prescribers was 830. 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.