Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Colin Warren Duffy, MD

Individual provider Military Health Care Provider · NPI 1659010452

Dr. Colin Warren Duffy, MD is a Military Health Care Provider in Bethesda, Maryland. Registered with an NPI since 2022.

In the registry since
2022
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8901 Wisconsin Ave
Bethesda, MD 20889-0004
Phone: (301) 295-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Military Health Care Provider (primary) Taxonomy 171000000X

Record details

NPI number1659010452
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 31, 2022
Last updated in NPPESAugust 17, 2023
Certification dateAugust 17, 2023

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