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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Katherine Amanda Ko, ARNP

Psychiatric/Mental Health Nurse Practitioner in Bellevue, WA · enumerated 2009.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1891927000

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Registry record

Entity type Individual (Type 1)
Name Katherine Amanda Ko
Credential ARNP
Sex Female
Practice address Bellevue, WA, 98004
Phone (425) 968-5948
Fax (425) 385-0985
Enumeration date Aug 20, 2009
Last updated in NPPES Oct 29, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP60213651 (WA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Katherine Ko?
The National Provider Identifier (NPI) for Katherine Ko is 1891927000, a Type 1 (individual) record in the CMS NPPES registry.
Where does Katherine Ko practice?
The practice location on file with NPPES is in Bellevue, WA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-29.