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

Dr. James Byron Darnton, MD

Individual provider Internal Medicine Physician · NPI 1396087227

Dr. James Byron Darnton, MD is an Internal Medicine in Seattle, Washington. Graduated from Perelman School of Med at the University of Pennsylvania in 2013, 13 years ago. Practices with The Association of University Physicians, a 3,459-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
13
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
WA
In the registry since
2013
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

325 9th Ave Box 359892
Seattle, WA 98104-2420
Phone: (206) 744-9700
Fax: (206) 744-8516
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence ML 60358691 (WA)

Record details

NPI number1396087227
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 18, 2013
Last updated in NPPESJuly 19, 2013

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2013 (13 years in practice)
Group practice The Association Of University Physicians — 3459 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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