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Katherine Duffey

NPI 1851888929 · on the registry since 2018

Practice

Address: 833 Chestnut St Ste 220
Philadelphia, PA 19107
Phone: (215) 955-8465
Organisation at this address: Jeffex Inc
Genzyme Corporation
The Nemours Foundation
Mental Health Partnerships
Thomas Jefferson University
Inferred from a shared address, not stated in the registry.
Clinicians at this address: 823

Registry record

Primary taxonomy: Gastroenterology Physician
207RG0100X
Also registered as: Internal Medicine Physician
Licence states on file: PA
From the registry's licence fields, which are often incomplete.
Sex: Female
Record last updated: 2026-03-18

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in Pennsylvania