Katharine Avery McKenzie, ARNP
Family Nurse Practitioner · Seattle, WA
Katharine Avery McKenzie, ARNP is a family nurse practitioner with a practice address in Seattle, Washington, and NPI 1548607609, issued on May 30, 2013. Check the license (Washington AP60337640, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katharine Avery McKenzie
- Credential
- ARNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- AP60337640 WA
RN60225591 WA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Eastlake Ave E, Seattle, WA 98109
- Phone
- (206) 520-5000
- Enumerated
- May 30, 2013
- Record last updated
- Feb 2, 2026
- Medicare enrollment
- Enrolled (PECOS I20130723000307); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,781 in Washington → Look up another NPI →
Also registered at 825 Eastlake Ave E
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katharine Avery McKenzie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP60337640Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 69% of the cost of the top drugs
611 Medicare Part D claims for 220 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 28 claims were for opioids.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Amlodipine Besylate38 claims
- Atorvastatin Calcium29 claims
- Lisinopril21 claims
- Ketoconazole20 claims
- Omeprazole19 claims
- Metoprolol Succinate17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Kaiser Foundation Health Plan OF WashingtonLynnwood, WA
- The Association OF University PhysiciansSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katharine Avery McKenzie among 3,781 family nurse practitioner records in Washington
Katharine Avery McKenzie, ARNP is one of 3,781 family nurse practitioner records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 36% of them.
- NPI issued2013 · 36% of these records are older, 60% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2012 · median 2018 among the 2,116 with a school on file
- Record last updated2026 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
663 family nurse practitioner records list a practice address in Seattle
They are 663 of the 41,956 NPPES records with a practice address in Seattle, and 3,781 family nurse practitioner records in Washington.
All 3,781 in Washington → Every provider in Seattle → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Camelia Ades, ARNPSeattle, WA 981091023344785
- Annie Alidina, ARNPSeattle, WA 981091124200555
- Aijun Cai, NPSeattle, WA 981091376889766
- Patricia Cleary, ARNPSeattle, WA 981091346268331
- Gillian Ehrlich, DNP, IFMCPSeattle, WA 981091679865877
- Leslie Heron, APRN, FNP-BCSeattle, WA 981091215985510
- Jennifer Jacky, ARNPSeattle, WA 981091275606774
- Andrew Lin, ARNPSeattle, WA 981091841430717
Common questions
What is Katharine Avery McKenzie, ARNP's NPI number?
Katharine Avery McKenzie, ARNP's National Provider Identifier (NPI) is 1548607609, issued on May 30, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Katharine Avery McKenzie, ARNP located?
The NPPES record lists a practice address at 825 Eastlake Ave E, Seattle, WA, 98109. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.
How can I verify Katharine Avery McKenzie, ARNP's license?
NPPES lists Washington license number AP60337640, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Katharine Avery McKenzie, ARNP prescribe under Medicare Part D?
In 2024, Katharine Avery McKenzie, ARNP had 611 Medicare Part D claims for 220 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.