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

Isaac S. Dreyfus, MD

Individual provider Cardiovascular Disease Physician · NPI 1104389923

Isaac S. Dreyfus, MD is a Cardiovascular Disease (Cardiology) in Seattle, Washington. Qualified in 2019, 7 years ago. Licensed in Washington.

Years since qualifying
7
Licensed in
WA
In the registry since
2019
Specialties on file
2
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

1959 NE Pacific St
Seattle, WA 98195-0001
Phone: (206) 520-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence MD61648231 (WA)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD61648231 (WA)

Record details

NPI number1104389923
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 9, 2019
Last updated in NPPESJune 10, 2026
Certification dateJune 10, 2026
Mailing addressPo Box 50095, Seattle, WA 98145-5095

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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