Dennis Duffy, P.A.
Physician Assistant · Stony Brook, NY
Dennis Duffy, P.A. is a physician assistant with a practice address in Stony Brook, New York, and NPI 1932136447, issued on Jun 28, 2006. Check the license (New York 004529, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dennis Duffy
- Credential
- P.A.
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 004529 NY
Self-reported in NPPES; status is on the state search - Practice location
- New York Spine And Brain Surgery, Stony Brook, NY 11794
- Phone
- (631) 444-1116
- Enumerated
- Jun 28, 2006
- Entity
- Type 1 · individual
Also registered at New York Spine And Brain Surgery
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ricardo Aranguren, P.A.Physician Assistant1154357879
- Bryan Bobrowsky, P.A.Physician Assistant1720017031
- Colleen Calandra, P.A.Physician Assistant1215990593
- Brittany Falcone, PA-CSurgical Physician Assistant1497025985
- Heather Ferraro, PACPhysician Assistant1174697494
- Michele Howell, PAPhysician Assistant1447555750
Verify Dennis Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 004529Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
97% fewer Medicare Part D claims than the average physician assistant in 2024
21 Medicare Part D claims for 13 beneficiaries, against an average of 832 among the 95,030 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.
The Medicare quality score for 2023: 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
One hospital or facility affiliation
- New York Spine And Brain Surgery, University Faculty Practice CorporatStony Brook, NY
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
124 physician assistant records list a Stony Brook practice address
They are 124 of the 3,053 NPPES records with a Stony Brook practice address, and 15,097 physician assistant records in New York.
All 124 in Stony Brook → All 15,097 in New York → Every provider in Stony Brook →
Other physician assistant records in New York
- Brynn Aakjar, P.A.Yonkers, NY1447592456
- Andrea Aaron, PABronx, NY1427103555
- Gabriella AaronCentral Islip, NY1790605376
- Danielle AaronsSmithtown, NY1881207520
- John AbadeerBrooklyn, NY1801434949
- Zenebou Abalo-Toga, PANew York, NY1124556154
- Kevin Alfred Abalos, PA-CCambria Heights, NY1700286424
- Clarisse AbanillaNew York, NY1598445579
- Marie Abate, PA-CValhalla, NY1285225524
- Jonathan Abayev, RPA-CFlushing, NY1952580102
Common questions
What is Dennis Duffy, P.A.'s NPI number?
Dennis Duffy, P.A.'s National Provider Identifier (NPI) is 1932136447, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Duffy, P.A. located?
The NPPES record lists a practice address at New York Spine And Brain Surgery, Stony Brook, NY, 11794. Phone: (631) 444-1116. Providers update this record themselves, so call before visiting.
How can I verify Dennis Duffy, P.A.'s license?
NPPES lists New York license number 004529, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Dennis Duffy, P.A. prescribe under Medicare Part D?
In 2024, Dennis Duffy, P.A. had 21 Medicare Part D claims for 13 beneficiaries; the average among physician assistant prescribers was 832. Part D covers Medicare prescriptions only.
What is Dennis Duffy, P.A.'s Medicare quality score?
The 2023 MIPS final score is 98.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.