Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Danielle Duffy, MD

Individual provider Cardiovascular Disease Physician · NPI 1427094697

Dr. Danielle Duffy, MD is registered under Cardiovascular Disease (Cardiology) in Philadelphia, Pennsylvania. Graduated from Perelman School of Med at the University of Pennsylvania in 2002, 24 years ago. Practices with Jefferson University Physicians, a 1,554-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
24
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

925 Chestnut St Mezzanine Jefferson Heart Institute
Philadelphia, PA 19107-4216 Not confirmed with CMS for 11 years — call before visiting
Phone: (215) 955-5050
Fax: (215) 503-5650
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence MD426956 (PA)

Record details

NPI number1427094697
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2006
Last updated in NPPESMarch 24, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesGENERAL PRACTICE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2002 (24 years in practice)
Group practice Jefferson University Physicians — 1554 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients24
Services billed 55 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Jefferson University Physicians

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1554 clinicians in the practice; 12 are shown here.

Other providers in Philadelphia