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Ellen Lyman Thomason Derrick, MD

Vascular Surgery Physician in Seattle, WA · enumerated 2006.

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

National Provider Identifier

1659480630

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Registry record

Entity type Individual (Type 1)
Name Ellen Lyman Thomason Derrick
Credential MD
Sex Female
Practice address 3216 Ne 45th Pl Ste 207, Seattle, WA, 98105
Phone (206) 596-3976
Fax (206) 486-9013
Enumeration date Aug 30, 2006
Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License MD00045873 (WA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1659480630 Medicaid WA -

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 Ellen Derrick?
The National Provider Identifier (NPI) for Ellen Derrick is 1659480630, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ellen Derrick practice?
The practice location on file with NPPES is in Seattle, 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 2022-07-21.