Doctor profile · Federal record
Dr. Katherine Duffey
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Philadelphia, PA
- NPI 1851888929
- Accepts Medicare
- 8 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
833 Chestnut St Ste 220
Philadelphia, PA 191074405
(215) 955-8465
Credentials & registration
- NPI registered
- April 2018 — 8 yrs on file
- Profile last updated
- March 18, 2026
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- Pennsylvania #MD473869
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851888929. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$152
Transactions
3
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 1 | $98.82 | |
| Takeda Pharmaceuticals U.S.A., INC. | 2 | $53.42 |
By nature of payment
Frequently asked questions
What is Dr. Katherine Duffey's medical specialty?
Dr. Katherine Duffey practices Gastroenterology Physician in Philadelphia, PA.
Where does Dr. Katherine Duffey practice?
Dr. Katherine Duffey practices at 833 Chestnut St Ste 220, Philadelphia, PA 191074405. Office phone: 2159558465.
What is Dr. Katherine Duffey's NPI?
Dr. Katherine Duffey's National Provider Identifier (NPI) is 1851888929, issued by NPPES.
Does Dr. Katherine Duffey accept Medicare assignment?
Yes. Dr. Katherine Duffey accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.