Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

DR. PATRICK EMMET DUFFY MD
NPI 1619885712
Internal Medicine in Bethesda, MD

Active since August 31, 2026
NIH CLINICAL CENTER, 10 CENTER DRIVE, BETHESDA, MD 20892(240) 381-1317(301) 480-1962 Get Directions Write a Review

NPPES record added: August 31, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Dr. Patrick Emmet Duffy Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. PATRICK EMMET DUFFY MD (NPI 1619885712) is an individual internal medicine provider in Bethesda, Maryland, licensed in Virginia (0101043143) and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1619885712
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. PATRICK EMMET DUFFYCredential: MD
Location AddressNIH CLINICAL CENTER, 10 CENTER DRIVEBethesda, MD 20892
Mailing AddressBuilding 29b Room 4nn06, 29 Lincoln DriveBethesda, MD 20892-0001 · (240) 381-1317 · Fax (301) 480-1962
Fax(301) 480-1962
Sole ProprietorNo
Enumeration DateAugust 31, 2026
NPPES CertifiedAugust 30, 2026
NPI 1619885712 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in VA · 0101043143
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NIH CLINICAL CENTER, Bethesda, MD 20892

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Patrick Duffy's NPI number?

The NPI number for Patrick Duffy is 1619885712. It was assigned to this individual provider in the NPPES registry on August 31, 2026.

Where is Patrick Duffy located?

Patrick Duffy practices at Nih Clinical Center 10 Center Drive, Bethesda, MD 20892. The listed phone number is (240) 381-1317.

What is Patrick Duffy's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Patrick Duffy was last updated on August 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.