Duncan R. Daviau, PA-C
Physician Assistant · Worcester, MA
Duncan R. Daviau, PA-C is a physician assistant with a practice address in Worcester, Massachusetts, and NPI 1013432582, issued on Aug 7, 2017. Check the license (Massachusetts PA6250, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Duncan R. Daviau
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA6250 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (508) 421-1400
- Enumerated
- Aug 7, 2017
- Record last updated
- Nov 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (508) 421-1490
- Medicaid ID
- 110127336A MA
- Medicare enrollment
- Enrolled (PECOS I20260209003869); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Duncan R. Daviau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA6250Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average physician assistant in 2024
221 Medicare Part D claims for 175 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Naproxen28 claims
- Cephalexin18 claims
- Ibuprofen18 claims
- Methocarbamol18 claims
- Cefpodoxime Proxetil12 claims
- Prednisone11 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: $301.55
5 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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.
3 hospitals and group practices
- Nantucket Cottage HospitalNantucket, MA · Acute Care Hospitals3 of 5 stars
- Bluewater Emergency Partners OF Brunswick, LLCBrattleboro, VT
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Duncan R. Daviau among 4,713 physician assistant records in Massachusetts
Duncan R. Daviau, 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 2017, is newer than 40% of them.
- NPI issued2017 · 40% of these records are older, 55% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2017 · median 2019 among the 3,217 with a school on file
- Record last updated2020 · 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).
425 physician assistant records list a practice address in Worcester
They are 425 of the 13,166 NPPES records with a practice address in Worcester, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Worcester → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Michael Bennett, PA-CWorcester, MA 016551396724563
- Jennifer Bernardo-Bailey, PAWorcester, MA 016551447267166
- Stacy Brown, PA-CWorcester, MA 016551679548515
- Colleen Casey, P.A.Worcester, MA 016551962476218
- Erin Dunne, PA-CWorcester, MA 016551780694851
- Linda Fagundes, PA-CWorcester, MA 016551710952064
- Jeffery Giarnese, P.A.Worcester, MA 016551114991130
- Donna Marie Hayden, PA-CWorcester, MA 016551063487718
Common questions
What is Duncan R. Daviau, PA-C's NPI number?
Duncan R. Daviau, PA-C's National Provider Identifier (NPI) is 1013432582, issued on Aug 7, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Duncan R. Daviau, PA-C located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (508) 421-1400. Providers update this record themselves, so call before visiting.
How can I verify Duncan R. Daviau, PA-C's license?
NPPES lists Massachusetts license number PA6250, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Duncan R. Daviau, PA-C prescribe under Medicare Part D?
In 2024, Duncan R. Daviau, PA-C had 221 Medicare Part D claims for 175 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.