Alexander Duffy, MD
Otolaryngology Physician · Philadelphia, PA
Alexander Duffy, MD is an otolaryngology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1639732464, issued on Apr 17, 2019. Check the license (Pennsylvania MD490457, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Alexander Duffy
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- MD490457 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3509 N Broad St, Philadelphia, PA 19140
- Phone
- (844) 570-1767
- Enumerated
- Apr 17, 2019
- Record last updated
- Jan 16, 2026
- Fax
- (215) 707-6676
- Medicare enrollment
- Enrolled (PECOS I20250827003085); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 531 in Pennsylvania → Look up another NPI →
Also registered at 3509 N Broad St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexander Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD490457Check 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 otolaryngology physician in 2024
56 Medicare Part D claims for 36 beneficiaries, against an average of 541 among the 8,339 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: $1,918.92
10 payments; by number, the most common kind was travel and lodging; the largest payer was Stryker Corporation. The 6,429 providers of this specialty with any payment received $1,922.50 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
- Temple Faculty Practice Plan IncPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Duffy among 531 otolaryngology physician records in Pennsylvania
Alexander Duffy, MD is one of 531 otolaryngology physician records with a practice address in Pennsylvania. 82% 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 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2019 · median 2002 among the 355 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Pennsylvania
There are 531 otolaryngology physician records in Pennsylvania.
All 531 in Pennsylvania → Every provider in Philadelphia → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Rachel Georgopoulos, M.D.Philadelphia, PA 191401760745442
- Glenn Isaacson, MDPhiladelphia, PA 191401104814078
- John Krouse, M.D.Philadelphia, PA 191401619914603
- Jeffrey Liu, MDPhiladelphia, PA 191401679732796
- Caitlin McLean, M.D.Philadelphia, PA 191401164694048
- Nicole MolinPhiladelphia, PA 191401497249676
- Weston Niermeyer, MDPhiladelphia, PA 191401831728609
- Natasha Pollak, MDPhiladelphia, PA 191401700980984
Common questions
What is Alexander Duffy, MD's NPI number?
Alexander Duffy, MD's National Provider Identifier (NPI) is 1639732464, issued on Apr 17, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Duffy, MD located?
The NPPES record lists a practice address at 3509 N Broad St, Philadelphia, PA, 19140. Phone: (844) 570-1767. Providers update this record themselves, so call before visiting.
How can I verify Alexander Duffy, MD's license?
NPPES lists Pennsylvania license number MD490457, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alexander Duffy, MD prescribe under Medicare Part D?
In 2024, Alexander Duffy, MD had 56 Medicare Part D claims for 36 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.