Katherine Henderson, PA-C
NPI 1780855262 · Physician Assistant · Seattle, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Henderson, PA-C is a Physician Assistant provider in Seattle, WA (NPI 1780855262).
Provider details
- NPI number
- 1780855262
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA60259947 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 751 Ne Blakely Dr Ste 5010Issaquah, WA 98029-6201Phone: (425) 394-0700Fax: (425) 394-0701
Registry dates
- Enumerated
- 2008-03-12
- Last updated
- 2021-05-25
- Certified
- 2021-05-25
Frequently asked questions
- What is Katherine Henderson's NPI number?
- Katherine Henderson's National Provider Identifier (NPI) is 1780855262, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Henderson's specialty?
- Katherine Henderson is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine Henderson located?
- Katherine Henderson's practice location on file with NPPES is 601 Broadway, Seattle, WA 98122-5330.
- What is Katherine Henderson's phone number?
- The practice phone number listed in the NPPES registry for Katherine Henderson is (206) 386-2600.
- Does Katherine Henderson accept Medicare?
- Katherine Henderson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Henderson's NPI active?
- Yes — Katherine Henderson's NPI (1780855262) is active in the NPPES registry as of the last update on 2021-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.