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Dr. Keith Alexander Luther, MD

Internal Medicine Physician in Mercer Island, WA · enumerated 2006.

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

National Provider Identifier

1912001652

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Registry record

Entity type Individual (Type 1)
Name Dr. Keith Alexander Luther
Credential MD
Sex Male
Practice address 3236 78th Ave Se Ste 200, Mercer Island, WA, 98040
Phone (206) 275-5060
Fax (206) 275-5061
Enumeration date Sep 12, 2006
Last updated in NPPES Feb 16, 2026

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD00037360 (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
1912001652 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

How do I verify Keith Luther's NPI record?
Cross-check NPI 1912001652 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1912001652 active?
Yes, as of the latest NPPES snapshot, NPI 1912001652 is active (record last updated 2026-02-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-16.