Katherine Duffy, PA-C
Physician Assistant · New York, NY
Katherine Duffy, PA-C is a physician assistant with a practice address in New York, New York, and NPI 1598482689, issued on Oct 20, 2022. Check the license (New York 029188, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Duffy
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 029188 NY
25MP00906000 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 100 E 77TH St, New York, NY 10075
- Phone
- (212) 434-2000
- Enumerated
- Oct 20, 2022
- Record last updated
- Jan 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20260205000654); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 15,555 in New York → Look up another NPI →
Also registered at 100 E 77TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohamed Aboseria, MDStudent in an Organized Health Care Education/Training Program1225616345
- Bincy Abraham, NPFamily Nurse Practitioner1427309947
- Abduljabar Adi, MDStudent in an Organized Health Care Education/Training Program1376346957
- Arzu Adiguzel, ACNPAcute Care Nurse Practitioner1598019127
- Alexia Adler, DNP, AGACNPAcute Care Nurse Practitioner1689593915
- Yeshayahu AdonolemRegistered Nurse1235055930
Verify Katherine 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 029188Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average physician assistant in 2024
71 Medicare Part D claims for 29 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium19 claims
- Clopidogrel14 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: $63.35
3 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Katherine Duffy among 15,555 physician assistant records in New York
Katherine Duffy, PA-C is one of 15,555 physician assistant records with a practice address in New York. 74% 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 71% of them.
- NPI issued2022 · 71% of these records are older, 23% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2022 · median 2018 among the 8,158 with a school on file
- Record last updated2026 · 48% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3,108 physician assistant records list a practice address in New York
They are 3,108 of the 98,468 NPPES records with a practice address in New York, and 15,555 physician assistant records in New York.
All 15,555 in New York → Every provider in New York → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Babette Bevilacqua, P.A.New York, NY 100751528002565
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- Andrew Fabel, PA-CNew York, NY 100751609991835
- Ilissa Jackson, PA-CNew York, NY 100751609838358
- Bonnie Kurtz, PANew York, NY 100751720202435
- Thi Le, PANew York, NY 100751578710992
- Selene Liszka, PA-CNew York, NY 100751609100122
- Julia Marvel, PANew York, NY 100751366462947
Common questions
What is Katherine Duffy, PA-C's NPI number?
Katherine Duffy, PA-C's National Provider Identifier (NPI) is 1598482689, issued on Oct 20, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Duffy, PA-C located?
The NPPES record lists a practice address at 100 E 77TH St, New York, NY, 10075. Phone: (212) 434-2000. Providers update this record themselves, so call before visiting.
How can I verify Katherine Duffy, PA-C's license?
NPPES lists New York license number 029188, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Duffy, PA-C prescribe under Medicare Part D?
In 2024, Katherine Duffy, PA-C had 71 Medicare Part D claims for 29 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.