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

Mrs. Katherine Alison Besley Henderson, PA-C

Individual provider Physician Assistant · NPI 1780855262

Mrs. Katherine Alison Besley Henderson, PA-C is a Physician Assistant in Seattle, Washington. Works from 2 locations. Licensed in Oregon and Washington.

Licensed in
OR, WA
In the registry since
2008
Specialties on file
2
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

See every abbreviation used in this directory →

Practice location Address checks out

601 Broadway
Seattle, WA 98122-5330
Phone: (206) 386-2600
Fax: (206) 622-1644
Show map & directions

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

Additional practice locations (1)

  • 751 Ne Blakely Dr Ste 5010, Issaquah, WA 98029-6201 — (425) 394-0700

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA60259947 (WA)
Physician Assistant Taxonomy 363A00000X · Licence PA01319 (OR)

Record details

NPI number1780855262
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedMarch 12, 2008
Last updated in NPPESMay 25, 2021
Certification dateMay 25, 2021

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