James Whitney Diamantopoulos, PA-C
Physician Assistant · Brighton, MA
James Whitney Diamantopoulos, PA-C is a physician assistant with a practice address in Brighton, Massachusetts, and NPI 1871225904, issued on Jun 28, 2022. Check the license (Massachusetts PA8861, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James Whitney Diamantopoulos
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA8861 MA
Self-reported in NPPES; status is on the state search - Practice location
- 280 Washington St Ste 212, Brighton, MA 02135
- Phone
- (617) 762-1616
- Enumerated
- Jun 28, 2022
- Record last updated
- May 5, 2023
- Medicare enrollment
- Enrolled (PECOS I20221220001199); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 280 Washington St Ste 212
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jacqueline Flaherty, PA-CPhysician Assistant1316622640
Verify James Whitney Diamantopoulos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA8861Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average physician assistant in 2024
472 Medicare Part D claims for 214 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Mupirocin62 claims
- Betamethasone Dipropionate38 claims
- Ammonium Lactate37 claims
- Fluorouracil33 claims
- Ketoconazole24 claims
- Clobetasol Propionate23 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.
Industry payments in 2024: $2,870.51
130 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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 one group practice
- Atrius Health IncNeedham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Whitney Diamantopoulos among 4,713 physician assistant records in Massachusetts
James Whitney Diamantopoulos, 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 2022, is newer than 68% of them.
- NPI issued2022 · 68% of these records are older, 25% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2022 · median 2019 among the 3,217 with a school on file
- Record last updated2023 · 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).
52 physician assistant records list a practice address in Brighton
They are 52 of the 1,638 NPPES records with a practice address in Brighton, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Brighton → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- William Anderson, PA-CBrighton, MA 021351154611838
- William Beardsley, MDBrighton, MA 021351215917422
- Frank Biello, PABoston, MA 021351609048008
- Jessica Distefano, PA-CBrighton, MA 021351790126480
- Guerda Dominique, PABrighton, MA 021351124031174
- Christine Edwards, PA-CBrighton, MA 021351689638751
- Joanna Gross, PA-CBrighton, MA 021351023260981
- Marjorie Jimenez, P.A.Brighton, MA 021351043381833
Common questions
What is James Whitney Diamantopoulos, PA-C's NPI number?
James Whitney Diamantopoulos, PA-C's National Provider Identifier (NPI) is 1871225904, issued on Jun 28, 2022. An NPI identifies a provider in billing; it is not a license.
Where is James Whitney Diamantopoulos, PA-C located?
The NPPES record lists a practice address at 280 Washington St Ste 212, Brighton, MA, 02135. Phone: (617) 762-1616. Providers update this record themselves, so call before visiting.
How can I verify James Whitney Diamantopoulos, PA-C's license?
NPPES lists Massachusetts license number PA8861, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does James Whitney Diamantopoulos, PA-C prescribe under Medicare Part D?
In 2024, James Whitney Diamantopoulos, PA-C had 472 Medicare Part D claims for 214 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.